Hi there,
Swiss law requires parents to contribute financially towards their child's intiital education - including tertiary education.
There is a great deal of room for interpretation as to what is included in an inititial education, but as a rule of thumb this includes education necessary to become qualified for a pre-determined profession which is clearly planned out by a child ahead of time.
This may include tertiary education following an apprenticeship, internship, or even work experience when this work experience is clearly planned out as part of the overall initial education ahead of time (as is often the case with vocational matriculation).
In the case of college, parents are generally required to contribute financially until their child completes a baccalaureate. In the case of a university education, the requirement normally extends to the completion of a master's degree.
For their part, children are required to mainatin communication with their parents and to make attempts to contribute towards their own education. They are normally also required to stick to the educational plan which they decided on before commencing tertiary education.
Best regards from Moneyguru
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