Whenever used in this section and sections 10-262h to 10-262j, inclusive:

(1) “Adjusted equalized net grand list” means the equalized net grand list of a town multiplied by its income adjustment factor.

(2) “Base aid ratio” means for the fiscal year ending June 30, 2018, and each fiscal year thereafter, the sum of (A) one minus the town’s wealth adjustment factor, and (B) the town’s base aid ratio adjustment factor, if any, except that a town’s base aid ratio shall not be less than (i) ten per cent for a town designated as an alliance district, as defined in § 10-262u, or a priority school district, as described in § 10-266p, and (ii) one per cent for a town that is not designated as an alliance district or a priority school district.

(3) “Income adjustment factor” means the average of a town’s per capita income divided by the per capita income of the town with the highest per capita income in the state and a town’s median household income divided by the median household income of the town with the highest median household income in the state.

(4) “Median household income” for each town means that enumerated in the most recent federal decennial census of population or that enumerated in the current population report series issued by the United States Department of Commerce, Bureau of the Census, whichever is more recent and available on January first of the fiscal year two years prior to the fiscal year in which payment is to be made pursuant to § 10-262i.

(5) “Supplemental aid factor” means for each town the average of its percentage of children eligible under the temporary family assistance program and its grant mastery percentage.

(6) “Percentage of children eligible under the temporary family assistance program” means the town’s number of children under the temporary family assistance program divided by the number of children age five to seventeen, inclusive, in the town.

(7) “Average mastery percentage” means for each school year the average of the three most recent mastery percentages available on December first of the school year.

(8) “Equalized net grand list”, for purposes of calculating the amount of grant to which any town is entitled in accordance with § 10-262h, means the average of the net grand lists of the town upon which taxes were levied for the general expenses of the town two, three and four years prior to the fiscal year in which such grant is to be paid, provided such net grand lists are equalized in accordance with § 10-261a.

(9) “Foundation” means (A) for the fiscal year ending June 30, 1990, three thousand nine hundred eighteen dollars, (B) for the fiscal year ending June 30, 1991, four thousand one hundred ninety-two dollars, (C) for the fiscal year ending June 30, 1992, four thousand four hundred eighty-six dollars, (D) for the fiscal years ending June 30, 1993, June 30, 1994, and June 30, 1995, four thousand eight hundred dollars, (E) for the fiscal years ending June 30, 1996, June 30, 1997, and June 30, 1998, five thousand seven hundred eleven dollars, (F) for the fiscal year ending June 30, 1999, five thousand seven hundred seventy-five dollars, (G) for the fiscal years ending June 30, 2000, to June 30, 2007, inclusive, five thousand eight hundred ninety-one dollars, (H) for the fiscal years ending June 30, 2008, to June 30, 2013, inclusive, nine thousand six hundred eighty-seven dollars, and (I) for the fiscal year ending June 30, 2014, and each fiscal year thereafter, eleven thousand five hundred twenty-five dollars.

(10) “Number of children age five to seventeen, inclusive” means that enumerated in the most recent federal decennial census of population or enumerated in the current population report series issued by the United States Department of Commerce, Bureau of the Census, whichever is more recent and available on January first of the fiscal year two years prior to the fiscal year in which payment is to be made pursuant to § 10-262i.

(11) “Supplemental aid ratio” means .04 times the supplemental aid factor of a town divided by the highest supplemental aid factor when all towns are ranked from low to high, provided any town whose percentage of children eligible under the temporary family assistance program exceeds twenty-five shall have a supplemental aid ratio of .04.

(12) “Grant mastery percentage” means (A) for the school year ending June 30, 1989, average mastery percentage, and (B) for the school years ending June 30, 1990, through the school year ending June 30, 1995, the average mastery percentage plus the mastery improvement bonus, and (C) for each school year thereafter, the average mastery percentage.

(13) “Mastery count” of a town means for each school year the grant mastery percentage of the town multiplied by the number of resident students.

(14) “Mastery improvement bonus” means for each school year through the school year ending June 30, 1995, seventy-five per cent of the difference between (A) the grant mastery percentage for the previous school year, and (B) the average mastery percentage for the school year, but not less than zero.

(15) “Mastery percentage” of a town for any school year means, using the mastery test data of record for the mastery examination administered in such year, pursuant to § 10-14n, the number obtained by dividing (A) the total number of valid tests with scores below the state-wide standard for remedial assistance, as determined by the Department of Education, in each subject of the examinations pursuant to subsection (b) of § 10-14n taken by resident students, by (B) the total number of such valid tests taken by such students.

(16) “Mastery test data of record” means for the school year commencing July 1, 2013, and each school year thereafter, the data of record subsequent to the administration of the mastery examinations pursuant to subsection (b) of § 10-14n, as adjusted by the Department of Education pursuant to a request by a local or regional board of education filed with the department not later than the August thirtieth following the administration of such examination.

(17) “Number of children under the temporary family assistance program” means the number obtained by adding together the unduplicated aggregate number of children five to eighteen years of age eligible to receive benefits under the temporary family assistance program or its predecessor federal program, as appropriate, in October and May of each fiscal year, and dividing by two, such number to be certified and submitted annually, no later than the first day of July of the succeeding fiscal year, to the Commissioner of Education by the Commissioner of Social Services.

(18) “Per capita income” for each town means that enumerated in the most recent federal decennial census of population or that enumerated in the current population report series issued by the United States Department of Commerce, Bureau of the Census, whichever is more recent and available on January first of the fiscal year two years prior to the fiscal year in which payment is to be made pursuant to § 10-262i.

(19) “Regional bonus” means, (A) for any town which is a member of a regional school district and has students who attend such regional school district, an amount equal to one hundred dollars for each such student enrolled in the regional school district on October first or the full school day immediately preceding such date for the school year prior to the fiscal year in which the grant is to be paid multiplied by the number of grades, kindergarten to grade twelve, inclusive, in the regional school district, and (B) for any town which pays tuition for its students to attend an incorporated or endowed high school or academy approved by the State Board of Education pursuant to § 10-34, an amount equal to one hundred dollars for each such student enrolled in an incorporated or endowed high school or academy on October first or the full school day immediately preceding such date for the school year prior to the fiscal year in which the grant is to be paid multiplied by the number of grades for which students attend an incorporated or endowed high school or academy.

(20) “Regular program expenditures” means (A) total current educational expenditures less (B) expenditures for (i) special education programs pursuant to subsection (h) of § 10-76f, (ii) pupil transportation eligible for reimbursement pursuant to § 10-266m, (iii) land and capital building expenditures, and equipment otherwise supported by a state grant pursuant to chapter 173, including debt service, (iv) health services for nonpublic school children, (v) adult education, (C) expenditures directly attributable to (i) state grants received by or on behalf of school districts except grants for the categories of expenditures listed in subparagraphs (B)(i) to (B)(iv), inclusive, of this subdivision and except grants received pursuant to § 10-262i and § 10-262c of the general statutes, revision of 1958, revised to January 1, 1987, and except grants received pursuant to chapter 173, (ii) federal grants received by or on behalf of school districts except for adult education and federal impact aid, and (iii) receipts from the operation of child nutrition services and student activities services, (D) expenditures of funds from private and other sources, and (E) tuition received on account of nonresident students. The town of Woodstock may include as part of the current expenses of its public schools for each school year the amount expended for current expenses in that year by Woodstock Academy from income from its endowment funds upon receipt from said academy of a certified statement of such current expenses. The town of Winchester may include as part of the current expenses of its public school for each school year the amount expended for current expenses in that year by the Gilbert School from income from its endowment funds upon receipt from said school of a certified statement of such current expenses.

(21) “Regular program expenditures per need student” means, in any year, the regular program expenditures of a town for such year divided by the number of total need students in the town for such school year, provided for towns which are members of a kindergarten to grade twelve, inclusive, regional school district and for such regional school district, “regular program expenditures per need student” means, in any year, the regular program expenditures of such regional school district divided by the sum of the number of total need students in all such member towns.

(22) “Resident students” means the number of pupils of the town enrolled in public schools at the expense of the town on October first or the full school day immediately preceding such date, provided the number shall be decreased by the Department of Education for failure to comply with the provisions of § 10-16 and shall be increased by one one-hundred-eightieth for each full-time equivalent school day in the school year immediately preceding such date of at least five hours of actual school work in excess of one hundred eighty days and nine hundred hours of actual school work and be increased by the full-time equivalent number of such pupils attending the summer sessions immediately preceding such date at the expense of the town; “enrolled” shall include pupils who are scheduled for vacation on the above date and who are expected to return to school as scheduled. Pupils participating in the program established pursuant to § 10-266aa shall be counted in accordance with the provisions of subsection (h) of § 10-266aa.

(23) “Schools” means nursery schools, kindergarten and grades one to twelve, inclusive.

(24) “State guaranteed wealth level” means (A) for the fiscal year ending June 30, 1990, 1.8335 times the town wealth of the town with the median wealth as calculated using the data of record on December first of the fiscal year prior to the year in which the grant is to be paid pursuant to § 10-262i, (B) for the fiscal years ending June 30, 1991, and 1992, 1.6651 times the town wealth of the town with such median wealth, (C) for the fiscal years ending June 30, 1993, June 30, 1994, and June 30, 1995, 1.5361 times the town wealth of the town with the median wealth, (D) for the fiscal years ending June 30, 1996, to June 30, 2007, inclusive, 1.55 times the town wealth of the town with the median wealth, and (E) for the fiscal year ending June 30, 2008, and each fiscal year thereafter, 1.75 times the town wealth of the town with the median wealth.

(25) “Total need students” means the sum of (A) the number of resident students of the town for the school year, (B) for the school year commencing July 1, 2021, and each school year thereafter, (i) thirty per cent of the number of children eligible for free or reduced price meals or free milk, (ii) fifteen per cent of the number of children eligible for free or reduced price meals or free milk in excess of the number of children eligible for free or reduced price meals or free milk that is equal to sixty per cent of the total number of resident students of the town for the school year, and (iii) twenty-five per cent of the number of resident students who are English language learners, as defined in § 10-76kk.

(26) “Town wealth” means the average of a town’s adjusted equalized net grand list divided by its total need students for the fiscal year prior to the year in which the grant is to be paid and its adjusted equalized net grand list divided by its population.

(27) “Population” of a town means that enumerated in the most recent federal decennial census of population or that enumerated in the current population report series issued by the United States Department of Commerce, Bureau of the Census available on January first of the fiscal year two years prior to the fiscal year in which a grant is to be paid, whichever is most recent; except that any town whose enumerated population residing in state and federal institutions within such town and attributed to such town by the census exceeds forty per cent of such “population” shall have its population adjusted as follows: Persons who are incarcerated or in custodial situations, including, but not limited to jails, prisons, hospitals or training schools or persons who reside in dormitory facilities in schools, colleges, universities or on military bases shall not be counted in the “population” of a town.

(28) “Base revenue” for the fiscal year ending June 30, 1995, means the sum of the grant entitlements for the fiscal year ending June 30, 1995, of a town pursuant to § 10-262h of the general statutes, revision of 1958, revised to January 1, 2013, and subsection (a) of § 10-76g, including its proportional share, based on enrollment, of the revenue paid pursuant to § 10-76g, to the regional district of which the town is a member, and for each fiscal year thereafter means the amount of each town’s entitlement pursuant to § 10-262h of the general statutes, revision of 1958, revised to January 1, 2013, minus its density supplement, as determined pursuant to subdivision (6) of subsection (a) of § 10-262h of the general statutes, revision of 1958, revised to January 1, 2013, except that for the fiscal year ending June 30, 2003, each town’s entitlement shall be determined without using the adjustments made to the previous year’s grant pursuant to subparagraph (M) of subdivision (6) of subsection (a) of § 10-262h of the general statutes, revision of 1958, revised to January 1, 2013, except that for the fiscal year ending June 30, 2004, each town’s entitlement shall be determined without using the adjustments made to the previous year’s grant pursuant to subparagraph (N) of subdivision (6) of subsection (a) of § 10-262h of the general statutes, revision of 1958, revised to January 1, 2013.

(29) “Density” means the population of a town divided by the square miles of a town.

(30) “Density aid ratio” means the product of (A) the density of a town divided by the density of the town in the state with the highest density, and (B) .006273.

(31) “Mastery goal improvement count” means the product of (A) the difference between the percentage of state-wide mastery examination scores, pursuant to subdivisions (1) and (2) of subsection (a) of § 10-14n, at or above the mastery goal level for the most recently completed school year and the percentage of such scores for the prior school year, and (B) the resident students of the town, or zero, whichever is greater.

(32) “Target aid” means the sum of (A) the product of a town’s base aid ratio, the foundation level and the town’s total need students for the fiscal year prior to the year in which the grant is to be paid, (B) the product of a town’s supplemental aid ratio, the foundation level and the sum of the portion of its total need students count described in subparagraphs (B) and (C) of subdivision (25) of this section for the fiscal year prior to the fiscal year in which the grant is to be paid, and the adjustments to its resident student count described in subdivision (22) of this section relative to length of school year and summer school sessions, and (C) the town’s regional bonus.

(33) “Fully funded grant” means the sum of (A) the product of a town’s base aid ratio, the foundation and the town’s total need students for the fiscal year prior to the year in which the grant is to be paid, and (B) the town’s regional bonus.

(34) “Number of children below the level of poverty” means the number of children, ages five to seventeen, inclusive, in families in poverty, as determined under Part A of Title I of the No Child Left Behind Act, P.L. 107-110. The count for member towns of regional school districts shall be the sum of towns’ initial determination under Title I and the proportionate share of the regional districts determination based member enrollment in the regional district.

(35) “Current program expenditures” means (A) total current educational expenditures less (B) expenditures for (i) land and capital building expenditures, and equipment otherwise supported by a state grant pursuant to chapter 173, including debt service, (ii) health services for nonpublic school children, and (iii) adult education, (C) expenditures directly attributable to (i) state grants received by or on behalf of school districts except grants for the categories of expenditures listed in subparagraphs (B)(i) to (B)(iii), inclusive, of this subdivision and except grants received pursuant to § 10-262i and § 10-262c of the general statutes, revision of 1958, revised to January 1, 1987, and except grants received pursuant to chapter 173, (ii) federal grants received by or on behalf of school districts except for adult education and federal impact aid, and (iii) receipts from the operation of child nutrition services and student activities services, (D) expenditures of funds from private and other sources, and (E) tuition received on account of nonresident students. The town of Woodstock may include as part of the current expenses of its public schools for each school year the amount expended for current expenses in that year by Woodstock Academy from income from its endowment funds upon receipt from said academy of a certified statement of such current expenses. The town of Winchester may include as part of the current expenses of its public school for each school year the amount expended for current expenses in that year by the Gilbert School from income from its endowment funds upon receipt from said school of a certified statement of such current expenses.

(36) “Current program expenditures per resident student” means, in any year, the current program expenditures of a town for such year divided by the number of resident students in the town for such school year.

(37) “Base aid” means the amount of the grant pursuant to § 10-262h of the general statutes, revision of 1958, revised to January 1, 2013, that a town was eligible to receive for the fiscal year ending June 30, 2013.

(38) “Local funding percentage” means that for the fiscal year two years prior to the fiscal year in which the grant is to be paid pursuant to § 10-262i, the number obtained by dividing (A) total current educational expenditures less (i) expenditures for (I) land and capital building expenditures, and equipment otherwise supported by a state grant pursuant to chapter 173, including debt service, (II) health services for nonpublic school children, and (III) adult education, (ii) expenditures directly attributable to (I) state grants received by or on behalf of school districts, except those grants for the categories of expenditures described in subparagraphs (A)(i)(I) to (A)(i)(III), inclusive, of this subdivision, and except grants received pursuant to chapter 173, (II) federal grants received by or on behalf of local or regional boards of education, except those grants for adult education and federal impact aid, and (III) receipts from the operation of child nutrition services and student activities services, (iii) expenditures of funds from private and other sources, and (iv) tuition received by the district for the education of nonresident students, by (B) total current educational expenditures less expenditures for (i) land and capital building expenditures, and equipment otherwise supported by a state grant pursuant to chapter 173, including debt service, (ii) health services for nonpublic school children, and (iii) adult education.

(39) “Minimum local funding percentage” means (A) for the fiscal year ending June 30, 2013, twenty per cent, (B) for the fiscal year ending June 30, 2014, twenty-one per cent, (C) for the fiscal year ending June 30, 2015, twenty-two per cent, (D) for the fiscal year ending June 30, 2016, twenty-three per cent, and (E) for the fiscal year ending June 30, 2017, twenty-four per cent.

(40) “Number of children eligible for free or reduced price meals or free milk” means the number of pupils of the town enrolled in public schools at the expense of the town on October first or the full school day immediately preceding such date, in families that meet the income eligibility guidelines established by the federal Department of Agriculture for free or reduced price meals or free milk under the National School Lunch Program, established pursuant to P.L. 79-396.

(41) “Equalized net grand list per capita” means the equalized net grand list of a town divided by the population of such town.

(42) “Equalized net grand list adjustment factor” means (A) for the fiscal years prior to the fiscal year ending June 30, 2018, the ratio of the town’s equalized net grand list per capita to one and one-half times the town equalized net grand list per capita of the town with the median equalized net grand list per capita, and (B) for the fiscal year ending June 30, 2018, and each fiscal year thereafter, the ratio of the town’s equalized net grand list per capita to one and thirty-five-one-hundredths times the town equalized net grand list per capita of the town with the median equalized net grand list per capita.

(43) “Median household income adjustment factor” means (A) for the fiscal years prior to the fiscal year ending June 30, 2018, the ratio of the median household income of the town to one and one-half times the median household income of the town with the median household income when all towns are ranked according to median household income, and (B) for the fiscal year ending June 30, 2018, and each fiscal year thereafter, the ratio of the median household income of the town to one and thirty-five-one-hundredths times the median household income of the town with the median household income when all towns are ranked according to median household income.

(44) “Wealth adjustment factor” means (A) for the fiscal years prior to the fiscal year ending June 30, 2018, the sum of a town’s equalized net grand list adjustment factor multiplied by ninety one-hundredths per cent and a town’s median household income adjustment factor multiplied by ten one-hundredths per cent, and (B) for the fiscal year ending June 30, 2018, and each fiscal year thereafter, the sum of a town’s equalized net grand list adjustment factor multiplied by seventy per cent and a town’s median household income adjustment factor multiplied by thirty per cent.

(45) “Net current expenditures per resident student” means, in any school year, the net current expenditures, as defined in § 10-261, for such school year divided by the number of resident students in the town for such school year.

(46) “Base aid ratio adjustment factor” means (A) six percentage points for those towns ranked one, two, three, four or five in total eligibility index points, (B) five percentage points for those towns ranked six, seven, eight, nine or ten in total eligibility index points, (C) four percentage points for those towns ranked eleven, twelve, thirteen, fourteen or fifteen in total eligibility index points, and (D) three percentage points for those towns ranked sixteen, seventeen, eighteen or nineteen in total eligibility index points.

(47) “Eligibility index” has the same meaning as provided in § 7-545.

(48) “Base grant amount” means the equalization aid grant a town was entitled to receive for the fiscal year ending June 30, 2017, as enumerated in section 20 of public act 16-2 of the May special session*, minus any reductions to said equalization aid grant during the fiscal year ending June 30, 2017, resulting from lapses to the funds appropriated for said equalization aid grant attributable to the recommendation made by the Secretary of the Office of Policy and Management, pursuant to section 12 of public act 15-244*.

(49) “Grant adjustment” means the absolute value of the difference between a town’s equalization aid grant entitlement for the previous fiscal year and its fully funded grant.