To Sir, with Love is a 1967 British drama film that deals with social and racial issues in an inner city school. It stars Sidney Poitier and features Christian Roberts, Judy Geeson, Suzy Kendall and singer Lulu making her film debut. James Clavell (who had written The Children's Story three years prior) directed from his own screenplay, which was based on E.R. Braithwaite's 1959 autobiographical novel of the same name.

was lulu in the movie to sir with love?
yes