Let the school know you're thinking of applying — they can share their prerequisites and help you through the process.
It's best to ask — circumstances can change at any time.
1) Western Association of Schools and Colleges (WASC) — WASC is a U.S.-based regional accrediting body that evaluates K–12 schools against standards for school improvement, governance and student learning; SAS's history page and site footer note WASC accreditation for the school.
2) International Baccalaureate (IB) — SAS is an IB World School authorized to deliver the IB Diploma Programme; IB authorization indicates the school meets the IB Organisation's requirements for curriculum, teacher preparation and assessment practices. (SAS references its IB programme across its academic pages and in site affiliations.)
Only awards and recognitions explicitly described on the SAS website and awarded to the school itself in the past five years (2021–2025):
1) Named
Shanghai American School (SAS) is a non-profit PreK–12 school with two campuses in Shanghai: Pudong (1600 Lingbai Road) and Puxi (258 Jinfeng Road). The school was founded in 1912 and serves children from early childhood through high school. Early years at SAS use a Reggio Emilia–inspired approach; at high school SAS offers both Advanced Placement (AP) and the International Baccalaureate (IB) Diploma as pathways. The school highlights programs such as robotics alongside sports and performing arts, and provides an optional bus service for families. SAS is led by Head of School James Nelligan. (All facts below are taken from the SAS website.)