Why families moving to Sotogrande keep SIS on the shortlist
Sotogrande International School, or SIS, is one of the best-known international schools on the western Costa del Sol. Founded in 1978 and based in Sotogrande, it attracts families who want an English-speaking school with a genuinely international student body.
What makes SIS different is the combination of factors rather than one headline claim: a full IB pathway, a visible boarding programme and a strong extracurricular identity built around languages, service and sport.
| Detail | Sotogrande International School |
|---|---|
| Founded | 1978 |
| Location | Sotogrande, San Roque, Cádiz |
| Age range | School says it serves children from 6 months to 18 years |
| Academic route | IB-led pathway with post-16 options |
| IB stages | PYP, MYP and IB Diploma Programme |
| Boarding | Full, weekly and flexi boarding |
| Community | 1,300+ students and 80+ nationalities according to the school |
| Website | sis.ac |
Academic structure: why the IB offer matters here
The school describes a genuine progression from the early years into primary, middle and high school, with the International Baccalaureate at the centre of that structure. For relocating families, that continuity matters because it reduces the risk of another curriculum switch later on.
The official pages describe the Primary Years Programme in primary school, the Middle Years Programme for ages 11 to 16 and the IB Diploma Programme in high school. English is the main language of instruction, with multilingual support for children joining from abroad.
What the academic pathway looks like in practice
- PYP: inquiry-led primary education with strong language development and broad skills.
- MYP: a five-year middle-school route for 11 to 16 year olds, with critical thinking and community projects built in.
- IB Diploma Programme: the best-known senior route for families focused on university planning.
- Other post-16 options: SIS also lists an American-style High School Diploma and an International A Level pathway for some elite sports students.
Boarding: one of the few serious options in this part of Spain
Boarding is one of the clearest reasons SIS stands out. Very few schools in southern Spain combine a full international day-school model with such a visible residential offer. SIS publicly lists full boarding, weekly boarding and flexi boarding.
The published boarding information points to supervised study, weekday and weekend activities, shared ensuite accommodation, transport to some activities and a structured residential routine. Boarding appears to be integrated into the broader school experience rather than offered as an afterthought.
If boarding is a serious possibility for your family, ask specifically about year-group availability, airport transfers, weekend supervision and how flexible the school is if you need to move between weekly and flexi arrangements.
Campus life, facilities and sport
SIS positions itself as a premium campus, and the school pages give concrete details behind that. In primary, it highlights iPads, Mac computers and digital applications. In middle school, it points to technological events, arts exhibitions, music and drama performances, and the MYP Community Project.
Sport is also central to the SIS identity. The school promotes an Elite Sports Programme and gives dedicated visibility to golf and tennis. The golf pathway is aimed at students aged 10 to 18, while the tennis route is linked to SotoTennis Academy.
- English-speaking environment with multilingual support
- Digital tools in the younger years, including iPads and Mac computers
- Arts, music, drama and project work through the middle years
- Boarding-house study support and evening activities
- Elite sports options in golf and tennis
Fees and practical planning
SIS publishes a detailed 2026-27 fee schedule, so families can assess affordability before arranging a visit. The exact figure depends on age and whether you need boarding, but the published numbers place SIS firmly in the premium bracket.
| Published 2026-27 figures | Indicative amount |
|---|---|
| Registration fee | €350 for EC1-P6, €550 for M1-D2 |
| Membership fee | €3,000 per family for EC1-P6, €4,000 for M1-M5 |
| Deposits | €2,000 for EC1-P6 day pupils, €2,500 for M1-D2 day pupils, €5,000 with boarding |
| Day tuition | Roughly €9,840 in the early years and about €20,575-€28,255 through MYP and D1-D2 |
| Boarding | About €18,350 for weekly boarding and €22,720 for full boarding, with flexi and extra-night pricing also listed |
Who SIS tends to suit best
Sotogrande International School is usually a strong fit for families who want a truly international peer group, value the IB philosophy and may need more than a simple day-school setup.
For a broader comparison, see our overview of international schools on the Costa del Sol. Families also often compare SIS with Swans International School, Aloha College Marbella and International School Estepona.