As the construction of subdivisions proceeded in Oak Park during the 1970s and the population increased, schooling arrangements became increasingly frustrating for residents. Students had to be bused to high schools in Simi Valley, 23 miles away by road, and back again each day, despite the fact that schools of the nearby Las Virgenes Unified School District stood in proximity. With Oak Park lying in Ventura County, California and Las Virgenes in Los Angeles County, though, Oak Park students were not allowed to attend.