International Schools Near Frankfurt: FIS, ISF, and Every Option Compared

The school decision is often what determines where you live. Get it wrong and you are driving 45 minutes each way for the next three years. Most expat families arrive knowing one name, FIS, and assume that settles it. It does not. There are more options than HR told you, the waiting lists are longer than the schools admit, and the right choice depends almost entirely on where in Frankfurt's geography you end up living. This article covers every international school option near Frankfurt, their actual 2025/2026 fees, current admissions realities, and how each school should determine your housing search.

One more thing before the data: the conventional wisdom that FIS costs "around €18,000 to €20,000 a year" is wrong. The real number for school-age children is considerably higher. Everything in this article comes directly from official school fee schedules and admissions pages.

Every International School Near Frankfurt: Quick Comparison

Tuition figures from official 2025/2026 fee schedules. Exclude transport, lunches, and activity fees. Confirm directly with each school before any financial commitment.

Frankfurt International School (FIS), Oberursel

FIS is the school most Frankfurt expat families hear about first. It sits at the base of the Taunus mountains in Oberursel, about 23 kilometres north of Frankfurt city centre. The U3 underground line stops at Waldlust, less than a five-minute walk from campus. The S5 also reaches Oberursel, and school buses supplement public transit for students coming from across the region.

Founded in 1961 and one of the founding members of the International Baccalaureate organisation, FIS runs the full IB continuum: Primary Years Programme from age three, Middle Years Programme through Grade 10, and the IB Diploma in Grades 11 and 12. All graduating students also earn a US High School Diploma. In the Class of 2026, 93% pursued the IB Diploma. Total enrollment is 1,786 students from over 60 nationalities, with the largest groups being American (30%), Korean (22%), and German (20%).

What FIS actually costs

This is where most relocation briefings get it wrong. FIS tuition for school-age children in 2025/2026 runs roughly €22,000 to €29,000 per year, depending on grade. The lower end applies to Primary grades; upper school students (Grades 6 and above) sit in the upper range. Add the capital assessment fee of €6,000 per year for each of the first two years, plus a €1,500 registration fee for new students, and a family enrolling a Grade 7 student in year one is looking at a total first-year outlay in the region of €34,000 to €35,000.

Fees from the FIS official tuition page (fis.edu) and confirmed by independent school databases. Fees increase annually. The 2026/2027 rates are already published and run higher: Grade 11 to 12 reaches €31,365 before capital assessment.

Tax note: 30% of tuition and capital assessment fees for Grades 1 to 12 qualify as Sonderausgaben on the German tax return, which partially offsets the cost for families enrolled in the German tax system.

Admissions and waiting lists

FIS receives significantly more applications than it has places. The school confirms this in its own admissions materials: "hundreds more applications than spaces available," with some applicants waiting "a year or longer." Higher grade levels generally carry longer lists, though in strong enrollment years, younger grades fill up equally fast.

Priority goes first to children of FIS Corporate Partner employees, then to expatriate children arriving from abroad, then to German students previously abroad, and finally to those already in local schools. Sibling preference and alumni legacy factor in within each category.

Who FIS is for: Families staying two or more years, children with existing IB experience, and anyone settling in the northern Taunus corridor. From Bad Homburg, Kronberg, Königstein, or Oberursel, FIS is within a rational school commute. From southern or eastern Frankfurt, it is not.

ISF International School Frankfurt Rhein-Main

ISF sits in Sindlingen, the western borough of Frankfurt, near the Höchst industrial area. The address is Strasse zur Internationalen Schule 33, 65931 Frankfurt. Not Dreieich, as is sometimes stated in expat forums and relocation briefings : Sindlingen is western Frankfurt, accessible from the A66 and the Höchst S-Bahn stations. The distinction matters when choosing where to live.

Founded in 1995 through a partnership involving the Frankfurt Chamber of Commerce and the State of Hesse, ISF now enrolls around 850 students from 49 nationalities across a 47,000 square metre campus. The school uses the SABIS Educational System , a structured college-preparatory curriculum, and offers external examinations in all three major tracks: IB Diploma (international), IGCSE (British), and AP (American). This makes ISF genuinely curriculum-flexible in a way that FIS, which runs IB exclusively, is not.

What ISF actually costs

ISF publishes its fee schedule openly. The 2025/2026 rates by grade:

Full schedule: Kindergarten €14,850 / Grades 1 to 3 €18,255 / Grades 4 to 6 €19,395 / Grades 7 to 9 €21,165 / Grades 10 to 11 €22,860 / Grade 12 €24,000. Source: official ISF fee schedule 2025/2026.

On top of tuition: a School Place Reservation Fee of €2,000 per child per year for each of the first three years of enrollment. An enrolment fee of €600 applies annually for new students. Family discounts kick in from the second child (€750 off). A first-year family with a child in Grade 6 pays roughly €19,395 + €2,000 + €600 = €21,995. From year four onward, only tuition applies.

No German language is required for entry up to Grade 7. No knowledge of English is required up to Grade 7 either. ISF's SABIS-based instruction system accommodates new language learners in elementary years.

Admissions

ISF does not publish waiting list data. The school accepts applications through the year until early May, recommends starting "late winter or early spring," and confirms admission subject to space availability. Unlike FIS, there is no formal priority category system in the public documentation. If spaces exist in your child's year group, enrollment can be relatively straightforward. Contact admissions directly for current grade availability: admissions@isf.sabis.net.

Who ISF is for: Families who want curriculum flexibility (particularly those whose career might return them to a US or British education system), families arriving on shorter timelines who cannot wait for a FIS opening, and those living in or near western Frankfurt where the commute to Sindlingen is manageable.

accadis International School Bad Homburg

accadis is the option most frequently overlooked in expat school discussions. It sits in Bad Homburg itself, at the heart of the Taunus expat corridor, with around 550 students from 53 nationalities, ages 2 through 18. The school is bilingual from the start: subjects taught partly in German, partly in English, using the immersion method. Upper school students pursue the IB Diploma.

This is a different educational proposition from FIS or ISF. accadis is state-approved bilingual and meets the Hesse curriculum requirements during primary years, which means children exit the school with meaningful German alongside their international qualifications. For a family planning four or more years in the Taunus, this is an advantage. For a family on a two-year rotation, the German-language intensity is a less obvious fit.

What accadis costs

Source: accadis-isb.com fee overview. Additional costs: hot lunch €714 to 1,643/year; school uniform approximately €200. Income-based fee reductions of up to 50% available. Sibling discounts apply.

For Taunus families, accadis offers something neither FIS nor ISF can: zero school commute. The school is already in the neighbourhood where most Taunus expats live and work. For primary school children in particular, a 5-minute walk beats a 20-minute school bus at both ends of the day.

Frankfurt European School

The European School (Europäische Schule Frankfurt am Main) is located at Praunheimer Weg 126 in northern Frankfurt. It runs from nursery through to the European Baccalaureate in a genuinely multilingual environment. Students choose a language section (English, French, German, and others) and study core subjects in that language, with secondary languages integrated across the curriculum.

The key fact about the European School: it operates a three-category fee system.

Category I students are children of EU civil servants : ECB Frankfurt staff and EU institution employees. They pay nothing. Category II students are covered by bilateral financing agreements. Category III is everyone else : most Finance and Consulting expats who did not arrive via an EU institution appointment.

Category III fees for 2025/2026: Primary costs €6,009 per year; Secondary costs €8,195 per year. These are genuinely modest by Frankfurt international school standards. The catch is access: the school is primarily structured to serve EU institution employees, and places for Category III students depend on capacity after Category I demand is met. Applications open December 1 and close February 28 each year, with decisions in April.

Who the European School is for: ECB Frankfurt staff and EU institution employees (free). Other families should contact the admissions office to ask about current Category III availability: it exists, but it is not the primary intake.

Bilingual Kitas: Under 6

For children under 6, the immediate question is Kita, not school. The German Kita market is worse than the international school market. The Bertelsmann Stiftung puts the national shortfall at 384,000 places as of 2025. Frankfurt and the Taunus are not exceptions. Waiting lists of 12 to 18 months from registration are not unusual.

Apply to a minimum of three to five Kitas simultaneously. No penalty exists for parallel applications and it is how every experienced expat family approaches it.

English-German bilingual Kita options in the Taunus region:

Register for Kita as soon as you know your Frankfurt move date. Do not wait until you have a confirmed address. Most facilities accept pre-registration with an expected start date.

The Admissions Timeline

The families who land school places without stress are the ones who start the process before they sign a lease.

The School Determines Where You Live

Most families choose a neighbourhood first, then deal with school. The logic runs in the wrong direction. School location, waiting list status, and the specific year group your children need should drive the housing search, not follow it.

FIS families: The Taunus corridor makes sense. Oberursel is five minutes from campus by car or U3. Bad Homburg sits about 20 minutes away by car or public transit, with a direct U3/S5 connection. Kronberg and Königstein add 20 to 30 minutes. Anywhere in this corridor gives you a rational school commute alongside good Taunus living. From southern or eastern Frankfurt districts, you are looking at 45 to 60 minutes each way. This compounds badly across a school year.

ISF families: Sindlingen is in western Frankfurt. The areas around Höchst, Sossenheim, and the western districts are the obvious residential choices for a short commute. This sits in the opposite direction from the Taunus. Finance workers commuting to the ECB, Deutsche Bank, or banks in the city centre from western Frankfurt will need to budget for both journeys.

accadis families: You are already in Bad Homburg. No commute. This is the school for families who have already committed to the Taunus and want their children embedded in the same community rather than bussed somewhere else each morning.

No children or children under 2: Neighbourhood choice becomes primarily a commute-to-work calculation. The Taunus suburb comparison article covers this.

What Nobody Tells You at Open Days

The capital assessment at FIS surprises almost every family. Open day presentations focus on curriculum and community. The fee schedule comes later. A family budgeting on the headline tuition figure. Without the €12,000 capital assessment spread across two years and the registration fee, a family arrives at a number significantly below the real first-year cost. Ask for the complete fee schedule, including all one-time charges, before making any housing or location decisions based on affordability assumptions.

School fee negotiation belongs in the relocation package discussion, not after signing. Many finance employers include school fee contributions. If yours does not, raise it at the offer stage. Once you have signed and moved, the conversation is essentially over.

Language integration is faster than most parents expect. Both FIS and ISF support students arriving with limited English. Children under 10 who arrive with no English routinely integrate socially and academically within 12 months. The school gap fear, that a child will fall permanently behind, rarely materialises.

International school social dynamics are different from home. Most families stay three to five years. Children form friendships within that context. Transitions and goodbyes are normal parts of international school life and schools handle them. A child who has attended one international school adapts to the next one faster than the first.

The German public school option exists. Some Taunus Gymnasien carry international programs or strong English-language tracks. For a family committed to long-term Frankfurt life, a German Gymnasium costs nothing and produces children who speak German. For a two-year rotation with no German at home, it is not realistic. Knowing it exists is useful context.