He worked as a full-time elementary art teacher in the Westwood school system for 17 years, to June 30, 1984. He was then reduced to a part-time elementary art teaching position. Westwood had five art teachers at the time, four with tenure. Bednar and Harold Smalley had experience exclusively at the elementary level. Smalley had a greater number of years in the job. Denise Salto, Michael Zontanos and Michael Spinella were exclusively high school or seventh-eighth grade art teachers. Spinella was employed less than two years, and thus did not have tenure. He was nevertheless retained in a full-time job when Bednar's hours were reduced. No one disputes that reduction of a full-time job to part-time is a reduction in force (RIF). Klinger v. Cranbury Tp. Bd. of Ed., 190 N.J. Super. 354 (App.Div.1982).