Consider the following sentence:
I have always tried to excel in/at courses relevant to veterinary sciences, such as physics, biology and chemistry.
Which one is correct? A quick google search yielded no definite answers (it said both could be used, however, it seems to me some sources implied that they cannot always be used interchangeably).
Best Answer
I think I would use in when talking about a broad field and at when talking about a specific skill.
I'm not sure if its wrong to use at/in interchangeably but using them like this ^ is what comes naturally to me as a Brit.