Ridley High School serves the Ridley School District. Ridley High School is located in Folsom, Pennsylvania, and has an average student population of 2,200. The school draws students from many socioeconomic backgrounds due to Ridley Township's economically diverse population. The new high school opened in September 2001. In 2010, Ridley High School had 2,067 students with 146 teachers. There were 1,071 male students and 992 females. Low income students - 445. The Principal is William Mills. The Assistant Principals are: Mrs. Deena Cellini-Wasson, Mrs.