Notwithstanding the provisions of Kan. Stat. Ann. §§ 74-4911, 74-4913 and 72-5501 to the contrary, an employee who was first employed in the Kansas public schools in the fall of 1933 and was continuously employed in the Kansas public schools until 1953; who was a county extension agent from September 1, 1953 until December 31, 1963; who was employed as an instructor for Kansas state university from April 6, 1964 through January 16, 1965; who was employed as farm manager and vocational instructor at Kansas state industrial reformatory from January 16, 1965 through October 7, 1970; and who was employed in the public schools of Kansas from July 1, 1971 through the effective date of this act shall, upon application, establish membership in the Kansas school retirement system on January 16, 1965 and may return any amounts refunded from said system and regain his original status as of such date and shall establish membership in the Kansas public employees retirement system on January 1, 1971 and shall receive prior and participating service credit in accordance with the provisions of such system upon payment of the appropriate employee contributions.