I’ve been looking at international schools in Madrid for my child lately, and after checking several, the biggest challenge has surprisingly turned out to be the language. I initially thought international schools would simply mean English instruction, but it’s much more complex. Different systems have vastly different language policies, which is a bit of a headache. I’d love to discuss this with everyone.

Main Language Models
From what I’ve gathered, here are the main language models offered by mainstream international schools:
1. Purely British/American Schools
These schools essentially replicate the British or American education system, offering programs like the A-Level curriculum or the American High School Diploma. From kindergarten through high school, the primary language of instruction is English. Spanish is typically taught as a mandatory foreign language, usually for about one period a day. The advantage of this model is the pure English environment, which ensures a smooth transition for children planning to study in the UK or the US. However, the downside is also clear: children have limited exposure to Spanish at school, which may slow their integration into local society.
2. The Bilingual Model in IB Schools
Many IB schools market themselves as ‘bilingual.’ However, the quality of this ‘bilingualism’ can vary greatly. A school’s official language of instruction in international schools policy might involve starting in early primary with some subjects taught in Spanish and others in English (at a 50/50 or 40/60 ratio). The proportion of English then gradually increases in secondary school to prepare for the final IBDP exams. This model sounds ideal but places immense demands on teachers, who must be both subject experts and bilingual masters. If executed poorly, it could lead to the child not mastering either language, a risk that might be lower in a dedicated Spanish language school. You might even find that some well-known Spanish language schools offer a more robust language foundation. I’ve heard some of these school programs are just ‘fake bilingual.’
3. Local Spanish Private/Semi-Private (Concertado) Schools
There’s also a category of schools that are fundamentally part of the Spanish education system but offer a ‘bilingüe’ (bilingual) program. In these schools, Spanish is the main language of instruction, while some ‘non-core’ subjects like science, art, or physical education are taught in English. With this model, Spanish proficiency is guaranteed, but the quality of English, including accent and fluency, can be inconsistent. The tuition is considerably cheaper than at international schools, but it requires a high level of Spanish from parents—otherwise, you might find yourself lost during parent-teacher conferences.
| School Type | Primary Language | Spanish Language % | Best For |
| Pure British/American | English | Low | Targeting UK/US universities, not staying in Spain long-term |
| IB Bilingual School | English + Spanish | Medium | Balancing both languages, flexible future options |
| Local Private Bilingual | Spanish | High | Planning to integrate into Spain long-term, limited budget |
Choosing the right language model really depends on your family’s future plans. Are you using Spain as a stepping stone, or do you plan to put down roots here for the long term? Our family is currently leaning towards an IB school because it seems more flexible, but we’re also concerned about the actual effectiveness of the bilingual teaching. I’m curious how other parents on this forum made their choices. Does anyone have children currently enrolled who could share their real experiences? Any advice would be greatly appreciated
!