(a) Every three years beginning in 2010, the authority shall concurrently update the following:

Terms Used In Hawaii Revised Statutes 302A-1612

(1) School site area averages, using the total school land requirement for each individual in a school impact district as calculated pursuant to section 302A-1606(b);
(2) Elementary, middle or intermediate, and high school permanent facility construction costs per student, as provided under section 302A-1607; and
(3) Revenue credit per unit figures provided pursuant to section 302A-1607(e).
(b) Every three years following the initial determinations made pursuant to § 302A-1604, the authority shall update the following:

(1) Student generation rates for each established school impact district; and
(2) The statewide level of service.
(c) Every three years beginning in 2010, the authority shall, where appropriate, update the list of cost factors for the twenty-six geographically limited cost districts, as provided in section 302A-1607(d), by incorporating any changes to the cost factors that have been made by the department of accounting and general services.
(d) If any data update required by this section is not completed within the specified time, the most current data shall be used until the update is completed.