1. Short title This Act may be cited as the Guard and Reserve GI Bill Parity Act of 2024 . 2. Expansion of eligibility for Post-9/11 Educational Assistance to members of the National Guard who perform certain full-time duty (a) In general Section 3301(1) of title 38, United States Code, is amended— (1) by amending subparagraph (B) to read as follows: (B) In the case of members of the reserve components of the Armed Forces— (i) service on active duty (as defined in section 101(d) of title 10), inactive-duty training (as defined in section 101(d) of title 10), or annual training duty; or (ii) service on active duty under a call or order to active duty under section 688, 12301(a), 12301(d), 12301(g), 12301(h), 12302, 12304, 12304a, or 12304b of title 10 or section 3713 of title 14, but not including inactive duty training (as defined in section 101(d) of title 10) or annual training duty. ; and (2) in subparagraph (C)— (A) in clause (i), by striking ; or and inserting a semicolon; and (B) by striking clause (ii) and inserting the following new clauses: (ii) in the National Guard when performing full-time National Guard duty (as defined in section 101 of title 32); or (iii) in the National Guard when performing active duty (as defined in section 101 of title 32). . (b) Effective date The amendments made by subsection (a) shall take effect on the date that is one year after the date of the enactment of this Act. (c) Retroactive applicability The amendments made by subsection (a) shall apply with respect to service performed on or after September 11, 2001. (d) Application of time limitation for use of entitlement Section 3321(a) of title 38, United States Code, shall apply to entitlement to educational assistance acquired as a result of the amendments made by subsection (a) as if such amendments had been enacted immediately after the enactment of the Post-9/11 Veterans Educational Assistance Act of 2008 ( Public Law 110–252 ).