Section 411-404-5 - Applicability1. The above rules and regulations shall apply to membership and creditable service rendered for all public school teachers after September 1, 1978.2. Creditable service rendered by tutors, substitutes and adult education teachers prior to September 1, 1978, will be granted on the basis of retirement system procedures in effect before September 1, 1978.3. This rule applies to public school teachers who are members on and after September 1, 1978, and does not apply to those retired on or before that date.94- 411 C.M.R. ch. 404, § 5