Student or Learner
I have some doubts regarding the usage of in/at when followed by the name of a university or college.
Here are some examples:
at/in the University of Cambridge?
at/in ABC Secondary School?
The American use would be "at."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.