Central Bangkok, as used in this guide, covers Sathorn, Silom, Asok and the inner Sukhumvit sois, Rama 3 and the Chao Phraya riverside, Ratchada and Huai Khwang, Rama 9 and Phaya Thai. It suits families living in the city's condominium districts who want short commutes on the BTS and MRT. Schools here range from large riverside and city-centre campuses to compact British, Australian, Japanese and IB schools on Sukhumvit side streets, along with primary-only city campuses run by some of Bangkok's best-known international schools.