As explained in other threads, there are multiple issues.
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A teacher, if foreign, needs the right to work. A normal work permit won’t be granted for kindergarten teaching, so the only way around that is to have a work permit exemption (e.g. OWP). Otherwise, the teacher can be fined and deported.
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A kindergarten teacher (or “educare” provider), regardless of nationality, needs qualifications as in the law Tando cited. Otherwise, the teacher can be fined.
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A kindergarten can’t have foreign language classes. Otherwise, it can be shut down.