Ridley School District is a large, suburban public school district in southeastern Delaware County, Pennsylvania in the United States. It serves the residents of Ridley Township, and the boroughs of Ridley Park and Eddystone. Ridley School District encompasses approximately 8 square miles. According to 2000 federal census data, Ridley School District served a resident population of 40,429. In 2009, the district residents’ per capita income was $21,563, while the median family income was $56,201. In the Commonwealth, the median family income was $49,501 and the United States median family income was $49,445, in 2010.Per Ridley School District officials, in the school year 2007–08, Ridley School District provided basic educational services to 5,775 pupils. The district employed: 443 teachers, 430 full-time and part-time support personnel, and 28 administrators. Ridley School District received more than $18.8 million in state funding in school year 2007–08.

The district has one high school, one middle school, and seven elementary schools.