International School Winterthur has a non-selective entry policy. If there is a place a student will generally be accepted subject to certain common sense conditions.

Applicants with a special need history (for example, dyslexia, ADHD, medication intervention) will meet with the Head of School for assessment in order to establish that International School Winterthur can offer a valid educational programmme.

Generally, though, parents must complete a detailed application including: application form, health record, language profile, financial regulations and school fees fully (including details of previous testing). Interviews with parents and wherever possible with the student are also required.