Given the task definition and input, reply with output. The goal of this task is to translate questions in Catalan into English. The requirements of the translation is that: the text must be equivalent in meaning, the text must not be ambiguous, and the text must be written as a question

Després de l’apartheid, quins tipus d’escoles es coneixen com a escoles "Model C"?

In what century did missionaries notably establish church schools in South Africa?