Ride grew up in the Van Nuys and Encino neighborhoods of Los Angeles. In 1960, when she was nine years old, the family spent a year traveling in Europe. In Spain, Ride played tennis for the first time. She enjoyed sports, tennis most of all, and at age 10 was coached by Alice Marble, a former world number one player. By 1963 Ride was ranked number 20 in Southern California for girls aged 12 and under. She attended Encino Elementary School, Portola Junior High (now Portola Middle School), Birmingham High School and then, as a sophomore on a tennis scholarship, Westlake School for Girls, an exclusive all-girls private school in Los Angeles. Elizabeth Mommaerts, who taught human physiology, became a mentor. Ride resolved to become an astrophysicist. She graduated in June 1968, and then took a class in advanced math at Santa Monica College during the summer break.