Is Pi (π) really missing from the equation editor (for students to answer questions)?
I can't find it! Only options for students seems to be to use old hardcore ascii entry "Alt-227" -but I'm not sure I can instruct the to use that.
Depending on what you want there is this function to add special characters in Essay-questions. The math symbol palette ca be used as well but mainly for latex.symbols and then in question types math entry, math working and essay see following articles (note that it is a feature that needs acitvation):
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