Located in Phnom Penh Thmey, Sen Sok District, Phnom Penh, Western International School’s Stadium Main Campus welcomes children aged approximately 3–5 years with its American-style nursery and pre-school program. The school follows a bilingual (English and Khmer) curriculum, combining play-based learning and early prep for primary education. Small class sizes and internationally qualified teachers support language development and early social skills. The campus offers Cambodia’s largest sensory room, outdoor playground, and swimming pool—ideal for stimulating young learners. Known for its inclusive approach, WIS also provides specialized support programs and is one of Phnom Penh’s largest preschool providers across its extensive network of campuses.