Mary Anderson Russell, 47, who died July 16 in a two-car auto accident near San Luis Obispo, Calif., was a fifth-grade teacher at Cedar Lane Elementary School in Vienna.

Miss Russell, of Falls Church, and her passenger, Ava Diane Poe, of Arlington, were pronounced dead at the scence after their car was struck head-on by another car that had crossed over their lane, according to the Calfornia Highway Patrol. They were travelling together on a vacation trip. The driver of the other car, Mark Hagopian, of Reedley, Calif., was charged with vehicle manslaughter, the highway patrol said. Two passengers in his car were treated in a hospital and released. A third passenger, Vincent Crittentin, of Dinuna Calif., died Sunday in Templeton hospital of injuries suffered in the accident.

Miss Russell came to Washington and began teaching Cedar Lane Elementary School 13 years ago. She had taught fourth and fifth grades and helped direct several school musicials, including "Oklahoma!" and "The King and I."

She was reared in Charlotte, N.C., and earned a bachelor's degree at the University of north Carolina. She taught in elementary schools in Winston-Salem, N.C., and Charlotte, and in a U.S. military dependants' school in Frankfurt, Germany, before coming here.

She said survived by her parents, Mr. and Mrs. Russell, of Charlotte.