(1) If you have never been a member of the teachers' retirement system (TRS), you may establish membership in Plan 2 or Plan 3 if you worked as a teacher for seventy or more hours per month during at least five months within a single school year period of September 1st through August 31st, during the 1991-92 school year or later. You may apply for membership for work prior to the 1991-92 school year if it meets the membership requirements in effect when the work was performed. Your membership will begin when your first optional bill to purchase substitute teaching service credit is paid in full.

(2) If you have already established membership and have not withdrawn your contributions, you may be eligible to purchase service credit for working as a substitute teacher.

(a) TRS Plan 1. If you are a Plan 1 member, you may apply to the department for service credit as a substitute teacher for any school year during which you worked a minimum of twenty full-time days between July 1st and June 30th.

(b) TRS Plan 2 or Plan 3. If you are a Plan 2 or Plan 3 member, you may apply to the department for service credit as described in subsection (4) of this section, for any compensated employment as a substitute teacher that occurs after your first month of established service credit. You may apply for service credit for compensated employment as a substitute teacher that occurred prior to your first month of established service credit if it meets the requirements for membership as described in subsection (1) of this section.

(3) If you previously established membership and withdrew your contributions, you may purchase service credit as a substitute teacher if you meet the criteria in this subsection.

(a) TRS Plan 1. You may reestablish membership in TRS Plan 1 if you worked as a substitute teacher for the equivalent of ninety full-time days within a single school year period of July 1st through June 30th.

(b) TRS Plan 2. You may reestablish membership in TRS Plan 2 if you worked as a substitute teacher as described in subsection (1) of this section.

(c) TRS Plan 3. If you are a Plan 3 member and withdrew your contributions, you may apply to the department for service credit for any compensated employment as a substitute teacher that occurred after your first month of established service credit. You may apply for service credit for compensated employment as a substitute teacher that occurred prior to your first month of established service credit if it meets the requirements for membership as described in subsection (1) of this section.

(4) To apply, you must submit a substitute teacher's application for service credit.

(a) Applications must be submitted no earlier than the end of your plan's school year in which you worked. The school year ends on June 30th for Plan 1, and August 31st for Plans 2 and 3.

(b) If you are establishing membership in TRS for the first time, you must also submit a member information form to indicate your selection of Plan 2 or Plan 3.

(c) If you are an established Plan 3 member, you must also submit a member information form to indicate your contribution rate and investment options.

(d) If you are purchasing service credit for a period prior to the 2004-05 school year, or for work performed for a higher education employer or for the Washington state center for childhood deafness and hearing loss or the school for the blind, you must also submit quarterly reports to DRS along with your application for service credit. Quarterly reports must show the exact hours worked and compensation earned each month, and must be signed by the employer.

(5) To receive substitute teacher's service credit, you must pay the appropriate member contributions.

(a) Upon receipt of your application materials, the department will determine the amount of service credit you are eligible to purchase and will provide an optional bill for the amount due. Your service credit will be applied when the bill is paid in full.

(b) You have six months following the end of the school year in which you worked to pay the member contributions interest-free. Interest will begin to accrue on the first day of the seventh month following the end of the school year. The school year ends on June 30th for Plan 1, and August 31st for Plans 2 and 3.

(i) TRS Plan 1 or Plan 2. If payment is received after the six month interest-free period, the amount due will include interest on both the Plan 1 or Plan 2 member and employer contributions.

(ii) TRS Plan 3. If payment is received after the six month interest-free period, the amount due will include interest on the Plan 3 employer contributions.

(6) Defined terms used. Definitions for the following terms used in this section may be found in the sections listed.

(a) "Member" - RCW 41.32.010(25).

(b) "Service" - RCW 41.32.010(43).

(c) "Substitute teacher" - RCW 41.32.010(48).