(1) “Member” means a public school employee, except that member does not include any of the following:

  (a) An individual enrolled in a neighborhood youth corps program operated with funds from the federal office of economic opportunity or an individual enrolled in a comparable youth training program designed to prevent high school dropouts and rehabilitate high school dropouts operated by an intermediate school district.

  (b) An individual enrolled in a transitional public employment program and employed by a reporting unit.

  (c) An individual employed by a reporting unit while enrolled as a full-time student in that same reporting unit.

  (d) An individual who elects to participate in the optional retirement program under the optional retirement act of 1967, 1967 PA 156, MCL 38.381 to 38.388.

  (e) A retirant of this retirement system.

  (f) An individual, not regularly employed by a reporting unit, who is employed by a reporting unit through a summer youth employment program established under the Michigan youth corps act, 1983 PA 69, MCL 409.221 to 409.229.

  (g) An individual, not regularly employed by a reporting unit, who is employed by a reporting unit to administer a program described in subdivision (f), (h), (i), (j), or (k).

  (h) After September 30, 1983, an individual, not regularly employed by a reporting unit, who is employed by a reporting unit through participation in a program established under the former job training partnership act, Public Law 97-300, 96 Stat 1322 or beginning July 1, 2000, the workforce investment act of 1998, Public Law 105-220, 112 Stat 936.

  (i) An individual, not regularly employed by a reporting unit, who is employed by a reporting unit through participation in a program established under the PATH program under section 57f of the social welfare act, 1939 PA 280, MCL 400.57f.

  (j) An individual, not regularly employed by a reporting unit, who is employed by a reporting unit through participation in a program established under the Michigan community service corps program, first established under section 25 to 35 of 1983 PA 259.

  (k) An individual, not regularly employed by a reporting unit, who is employed by a reporting unit through participation in a program established under the older American community service employment program under the older American community service employment act, title V of the older Americans act of 1965, Public Law 89-73, 42 USC 3056 to 3056p.

  (l) An individual, not regularly employed by a reporting unit, who is employed by a reporting unit in a temporary, intermittent, or irregular seasonal or athletic position and who is under the age of 19 years.

  (m) An individual, not regularly employed by a reporting unit, who is employed by a reporting unit only in a temporary position to assist in the conduct of a school election.

  (n) A qualified participant who makes a valid election under section 81d(1) to not become a member of Tier 1.

  (o) A qualified participant who is not a member of Tier 1 under section 81d(4).

  (p) Beginning with the effective date of the amendatory act that added section 42a, an individual employed by a reporting unit while enrolled as a student in that same reporting unit if the student’s services in the employ of the reporting unit are excepted from employment as described in 26 C.F.R. § 31.3121(b)(10)-2. However, an individual who, on the effective date of the amendatory act that added section 42a, is a member and is employed by a reporting unit while enrolled as a student in that same reporting unit and the student’s services in the employ of the reporting unit are excepted from employment as described in 26 C.F.R. § 31.3121(b)(10)-2 will remain a member while employed as described in this subdivision if the individual elects to remain a member. The retirement system shall determine a method of administering elections under this subdivision.

  (2) “Membership service” means service performed after June 30, 1945.

  (3) “Noncontributory plan” means the plan which began between July 1, 1974 and July 1, 1977, in which the reporting unit elected to discontinue withholding contributions from employees’ compensation.

  (4) “Noncontributory service” means credited service rendered under the noncontributory plan.

  (5) “Nonteacher” means an individual employed by a reporting unit who is not a teacher as defined in section 8.