In this guide
The two options in plain English
The local public school is the school the host country runs for its own children. It teaches in the national language, follows the national curriculum, and is free or nearly so to residents. Public schools differ enormously in quality between countries and between catchment areas within a country. A Helsinki city school is a different institution from a public school in a small town in Andalusia, both nominally public.
The private international school is the parallel, fee-charging system most often used by expat families. It teaches in English or a familiar international language, follows a portable curriculum such as IB, British or American, and charges fees that typically run from EUR 15,000 to EUR 30,000 per child per year. The standardisation of the international school market is precisely what makes it portable. The same school logic operates in Bangkok, Brussels, Buenos Aires and Beijing, with broadly similar pedagogy and broadly similar parent expectations.
The third option, often overlooked, is the local private bilingual school. This is a fee-charging school based in the host country, often religious in origin, teaching the national curriculum supplemented by a strong foreign language stream. Local private bilinguals cost a fraction of international school fees but require a degree of language commitment from the family. They are the under-discussed middle option in the public versus private decision. For our broader take on this overlap see international school versus local school.
Side by side comparison
| Local public school | International private school | |
|---|---|---|
| Language of instruction | Host country language | English or other major language |
| Curriculum | National curriculum | Portable curriculum (IB, British, American, French, German) |
| Annual fee | Free or very low | EUR 15,000 to 30,000 typically; up to 45,000 at the top end |
| Class size | Variable; 25 to 32 common in lower secondary | Smaller; 18 to 24 typical |
| Quality variation | Wide, including catchment effects | Narrower; commercial pressure keeps mid-tier schools above a floor |
| EAL provision | Variable. Strong in Nordic and Dutch systems, weak elsewhere | Routinely available, sometimes excellent |
| Mobility friendly | Low; transferring out is harder | High; curriculum travels between schools |
| Integration with host country | Strong. The child has local friends and learns the language | Limited. Expat-on-expat peer group |
| University destinations | Native qualification; strong onward routes into host country and EU | International qualification accepted globally; particularly strong for UK and US |
| SEN provision | Variable; strong in Northern European systems, weak elsewhere | Routinely available; quality varies by school |
Where public schools genuinely outperform
In several jurisdictions the local public school system genuinely outperforms most international school alternatives. Finland, Estonia, the Netherlands, Denmark and Sweden all run public school systems that perform at or above the OECD average for academic outcomes, with stronger equity, better teacher training and smaller class sizes than most international private schools deliver. A bright child placed into a strong public school in these countries will receive an education that, on academic measures, equals or exceeds the international school across the road. The local school will also, crucially, deliver the host country language and the integration into local life that the international school cannot.
Germany sits in a similar position with its Gymnasium track, which is academically strong, sometimes selective, and free to residents. A German Gymnasium delivers an Abitur that opens any European university and most global universities. A family in Munich choosing between the local Gymnasium and an international school is making a curriculum choice rather than a quality choice.
Switzerland's public schools, particularly in the German-speaking cantons, similarly outperform on academic measures. The French and Italian-speaking cantons run perfectly credible schools but with weaker English provision, which complicates the move back to an English-medium system.
The catch in all these cases is language. A public school in Stockholm or Helsinki teaches in Swedish or Finnish. For a family staying three or four years, the language demand is high, and the child's academic Swedish may not transfer to the next posting. The Nordic public schools are an excellent answer for families committed to a long stay, and a less obvious answer for families on shorter postings.
Compare local public and international private schools in your host city
Our school finder maps both options in the cities where most expat families land. Free, independent, no commitment.
Where private remains the better answer
In other markets the local public school does not outperform and the international private option is the more sensible choice. Most of the Gulf states fall into this category. UAE public schools serve Emirati children primarily and are not generally open to expat children. Saudi Arabia and Qatar operate similarly. For expat families in the Gulf, the international private school is in effect the only option, and the question is which private school to pick. Our Dubai city guide and the wider city pages set out the options.
Most of Southeast Asia falls into a similar pattern. Singapore restricts admission to local public schools for expat children, particularly at primary, and the available places are scarce. Thailand, Vietnam and Indonesia have public school systems that, while improving, are not generally a credible option for an English-speaking expat family staying two or three years. The local language commitment is also high.
The United States, the United Kingdom and Australia complicate the picture because they have functional public school systems, but the catchment areas vary enormously in quality, and a poor catchment school can produce outcomes worse than the international school alternative even before the curriculum continuity question enters. In these countries the answer depends on the specific neighbourhood rather than the country.
The language question
The language of instruction is the single most consequential variable in the public versus private decision. A family that commits to a Nordic or Dutch public school is committing the child to academic fluency in the host language within two to three years. The investment pays back if the family stays. It produces stranded language assets if the family moves before the language is fully embedded.
The honest version is that primary-aged children absorb a new language quickly enough that two years in a Dutch primary will produce functional Dutch within a year and academic Dutch within two. Secondary-aged children acquire the language more slowly, with academic-level fluency taking three to five years. A family with a child in late primary or early secondary is at the high-risk end of the language transition. A family with a child entering nursery or reception is at the low-risk end, because the child has the time to acquire the language deeply.
The other side of the language question is the heritage language. A family that places a child in a Spanish-medium school for four years risks erosion of English literacy, particularly if the home language is also non-English. Schools that handle this well integrate strong English from primary upwards. Schools that handle it poorly let the heritage language slide.
Curriculum continuity for a mobile family
For families who expect to move every two to four years, curriculum continuity becomes the dominant factor. The international school system is built around this constraint. A child completing Year 6 in a British international school in Singapore can start Year 7 in a British international school in Dubai without missing a beat. A child completing primary in a Dutch state school cannot transition to an English-medium secondary without disruption, and a child completing Dutch secondary cannot continue Dutch in another country.
The continuity question matters most around critical examination points. A child starting GCSEs at a British international school is on a two-year programme that has to be completed at a British school. The same applies to the IB Diploma, the French Baccalaureate and the German Abitur. Families who move mid-programme face material disruption regardless of school type, but the disruption is greater for national-curriculum systems than for portable international curricula.
For deeper detail on curriculum portability, see our IB versus A Levels piece and the broader curriculum hub. The choice between local national and international curriculum often determines the public versus private answer.
The honest cost picture
The cost calculation looks straightforward on paper. Local public school: zero or token fee. International private: EUR 20,000 per child per year, sometimes more. The difference looks decisive. The honest version is more nuanced.
Local public school carries hidden costs. The family needs to live in a strong catchment area, which can mean materially higher rent. The child may need private language tuition to bridge to academic-level host language. The transition out, at the end of the posting, may require an additional year of catch-up tuition in English or in the next host curriculum. None of these is invisible but none of them appears on the school's fee schedule.
International private school carries hidden costs of its own. The published tuition fee almost never includes registration fees, capital levies, transport, meals, books, exam fees or trips. The total all-in cost is typically 25 to 35 per cent above the headline tuition. For honest comparison, our fee comparison tool includes the full loaded cost rather than the headline figure.
The net comparison varies by city and by housing choice. In Amsterdam, public school in a strong catchment is materially cheaper than international school even after housing premiums. In Dubai, the comparison does not arise because public school is not realistically available. In Helsinki, public school is cheaper but the housing premium is real. The cost question is country and family specific; the headline fee figures are misleading on their own.
Which to pick if
If you are posted to a Nordic or Dutch city for four or more years, with a primary-aged child, and you value local integration: the local public school is a strong choice. The academic outcomes are competitive and the language acquisition is durable.
If you are posted for two to three years with a secondary-aged child and expect to move again: the international private school is usually the better choice. Curriculum continuity outweighs the integration loss.
If you are posted to the Gulf, most of Southeast Asia, or any market where local public schools are not available to expat children: the question does not arise. The international private school is the default and the decision becomes which private school.
If your child has SEN needs and you are posted to a country with a strong SEN tradition in public schools (Netherlands, Sweden, the United Kingdom): the public school may genuinely outperform the private alternative on SEN provision. Worth investigating before defaulting to private. Our piece on SEN at international schools sets out the comparison.
If your child has strong academic ability and you are in a country with a selective public track (German Gymnasium, French Lycee): the local public selective track may produce stronger academic outcomes than the international school alternative. Worth a serious tour.
If you value university destination in the host country: the local public route, with the native qualification, is usually the more direct route into local universities. International school graduates are accepted but enter through a conversion process.
The default of international private remains the right answer for most expat families in most cities. But it is not the right answer for all families in all cities, and a serious comparison saves both money and integration friction when the alternative is credible. For the parallel decision between national curriculum types, see our British versus American curriculum piece.