Did Niall Horan go to college? Where did Niall Horan go to high school? Niall Horan didn't go to college, but went to high school at Colasiste Mhuire, in Mullingar. Some fun facts about Niall Horan's education experience: he never actually went to prom. It's hard to believe that any of these Irish Charmers from One Direction would attended their high school prom.