SIS Swiss International School - Berlin

Berlin outpost of the Swiss-headquartered SIS network, on Heerstraße 465 in Spandau. Bilingual German-English from age 3 through 18, around 225 students, leaving qualifications in either the IB Diploma or the Berlin Abitur.

Mix is roughly sixty percent local German families to forty percent international, with French as an additional language. Class sizes average fifteen, capped around twenty-two, taught by native German and English speakers in parallel. The dual-pathway exit, IB Diploma alongside Abitur, is a genuine differentiator at this size and fee level.

Parent voice is consistently warm. Families talk about engaged teachers, intensive parent communication, and a small-school atmosphere where children feel known. The full-day model with shuttle, after-school care and clubs is a structural fit for working-parent households. The honest considerations are scale and location: a small student body limits class option choices in upper years, and the Spandau site is a real commute from central or eastern Berlin.

• Reviews are mostly warm. Parents value the bilingual German-English structure, the all-day programme, and teachers described as friendly and engaged. One parent said "choosing SIS has been the best decision we have made."
• Working parents specifically praise the all-day model. One parent said the school is fantastic support for fully-employed families.
• Two negative threads recur. One parent said their children were behind at their next school after two years at SIS Berlin despite good reports. Another flagged a kindergarten incident handled poorly, saying staff dismissed it as "typical roughhousing" and they felt unsupported.
• The school sits in Berlin-Spandau on Heerstraße, with an IB Diploma at the senior end. Most parent voices come via international-school aggregator pages rather than Reddit, where Berlin-school discussion is dominated by state-school catchment chat.