Established as an Anglican-affiliated all-boys school in 1889, Ridley became coeducational in 1973. The school is divided into ten houses, each of which serves as a residence and community for its students. All students take part in an extensive extracurricular program including sports (ranging from a beginner to varsity level), arts and theatre opportunities, student initiatives, and community service. Ridley's boarding program plays a dominant role in its curriculum, with faculty heavily involved in student life outside the classroom in roles such as housemasters, coaches, and advisors.