Three Fairfax County school administrators will be taking on new jobs in the school system. The changes, announced recently by Superintendent L. Linton Deck, were effective Tuesday.

Frank Elliott, principal at Jefferson High School, will become acting director of student services. Elliott will hold the position for one-year and succeeds Margaret Richardson who is on sabbatical leave.

Richard L. Murphy, who has been associate principal at Hayfield Secondary, will become acting principal at Jefferson.

Barbara Dry, acting coordinator of instruction for Area II, will become principal at Wakefield Forest Elementary School.

Elliott, who taught in Lynchburg before coming to the Fairfax County schools in 1964, has been a guidance counselor, assistance principal and principal at Lee High School. For two years, he was a member of the research division of the Virginia Department of Education before returning to Fairfax in 1967 as director of guidance at Lee High School. Elliott has been principal at Jefferson since 1974.

Murphy joined the Fairfax school system in 1968 as a teacher at Hayfield Intermediate. He also has served as a guidence counselor and an associate principal.

Fry began her Fairfax teaching career in 1957, and has taught at Layton Hall, Fairfax, Green Acres, Poe and Glasgow School. In 1965, she became principal at Burke Elementary and subsequently served as principal at Hunt Valley and Olde Creek Elementary schools.