SAIS - Santo António International School

International school Cascais families can consider SAIS – Santo António International School, an independent Catholic school in Estoril. The school welcomes pupils aged 2 to 19 and brings together a community representing 49 nationalities.

SAIS provides a British international education from Primary through to Upper School. Primary School serves ages 2–11, Middle School supports pupils aged 11–16, and Upper School is for students aged 16–19.

Its three campuses are located in Monte Estoril. Learning follows a Cambridge pathway, including IGCSE, Cambridge A-Levels and the AICE Diploma.

The school combines academic rigour with personalised guidance, helping pupils develop knowledge, confidence, curiosity and character as they progress through each stage. A family-focused environment is central to the SAIS approach.

The school describes its community as caring and supportive, with attention to each pupil’s individual journey. Families can book a visit or apply through the school’s admissions process.