Rainford High School is a coeducational secondary school and sixth form located in Rainford, Merseyside, England. Rainford High School opened on August 7, 1940, during World War II, as Rainford Senior Council School, with 127 students, one principal, and three teachers. The school was originally a grammar school. In 1945 the name was changed to Rainford County Secondary School. During the 1950s and 1960s, the school begun to grow in size. By this point, the school became a Secondary Modern school, entering its pupils for external examinations, including A-Level examinations.