Part-time service averaging at least one-half of a school day but less than a full school day shall be treated as full-time service for purposes of determining eligibility for benefits under this chapter. For purposes of determining benefits under subsections (a) to (d), inclusive, of section 10-183g, the percentages utilized in said sections shall be proportionally reduced for each year or portion of a year of service rendered or purchased after July 1, 1977, which is part-time service. Notwithstanding the provisions of subdivision (4) of section 10-183b, the average annual salary of a member with part-time service shall be such member's full-time annualized salary during his three highest years. Any benefit awarded pursuant to this section shall be proportional in all respects to the benefit which would have been payable had such service been rendered on a full-time basis.
(P.A. 85-594, S. 3, 4.)