Closely associated with the 'Method' approach to acting, Peggy became
an artistic director and instructor in association with
Lee Strasberg at the
Actors' Studio. Later she moved to California and opened her own acting
school, called The Loft Studio, with husband-actor
William Traylor, and became
one of Los Angeles' most respected drama teachers. Notable among her
students are
Lily Tomlin,
Sean Penn,
Anjelica Huston,
Michelle Pfeiffer,
Meg Tilly, and
Eric Stoltz.