1.10.4.2April must teach religion. There are at least two progress breaking bugs in 1.10.3.5. One results error, if principal visits her lessons. Second bug results event not firing in principal's office. You need 1.10.4.x to progress in her quests without hammer and chisel.
You did not tell which version you are playing.
Hm. so... shoud I call April to the office to talk about the student?