Simplify the following text for a Grade 10 native English-speaking person.
Original: Monroe enrolled at UCLA in 1951 where she studied literature and art appreciation , and appeared in several minor films playing opposite such long-established performers as Mickey Rooney , Constance Bennett , June Allyson , Dick Powell and Claudette Colbert .
Simplified: Monroe enrolled at UCLA in 1951 where she studied literature and art appreciation . She appeared in several minor films with long-established performers such as Mickey Rooney , Constance Bennett , June Allyson , Dick Powell and Claudette Colbert .