The International School Manila (ISM) was founded in 1920 as the American School, but officially changed its name in 1970 to reflect its diverse student population. Today, ISM has approximately 2,200 students representing 72 countries. In February 2008, it became the first overseas school to receive dual accreditation from the Council of International Schools and the US-based Western Association of Schools and Colleges. The curriculum at ISM is under constant review to ensure that it reflects best practices from around the world. In Elementary School, learning is inquiry-based and challenges the students to be creative, independent thinkers. In the Middle and High Schools, the program is subject-based and culminates in courses leading to the IB Diploma.