(a) Accrued credited service.--Eligibility points shall be computed in accordance with section 8306 (relating to eligibility points) with respect to all credited service accrued as of the effective date of this part.

(b) Future school service.--Every active member of the system shall accrue an eligibility point for each year of school service rendered subsequent to the effective date of this part.

(b.1) USERRA leave.--A member who is reemployed from USERRA leave or who dies while performing USERRA leave shall receive eligibility points in accordance with section 8306 for the school service that would have been performed had the member not performed USERRA leave.

(c) Purchase of previous creditable service.--Every active member of the system or a multiple service member who is an active member of the State Employees' Retirement System on or after the effective date of this part may purchase credit and receive eligibility points:

upon written agreement by the member and the board as to the manner of payment of the amount due for credit for such service; except, that any purchase for reinstatement of service credit shall be for all service previously credited.

(d) Purchase of previous noncreditable service.--Class T-C and Class T-D members who are active members on the effective date of this subsection¹ shall have three years from the effective date of this subsection to file a written application with the board to purchase any previous noncreditable school service. Class T-C and Class T-D members who are not active members on the effective date of this subsection but who become active members after the effective date of this subsection and Class T-E, Class T-F, Class T-G and Class T-H members shall have 365 days from entry into the system to file a written application with the board to purchase any previous noncreditable school service.