"in" is used before the names of countries, cities, town or road. (eg; Mr John live in England) "at" is used for place like buildings, home, offices (eg: Mr John work at XX building) Therefore, "at" is correct

'at' for schools, colleges, and universities 'in' for towns, cities and countries e.g. "I studied at the University of the West of England in Bristol." OR "I studied in Bristol at the University of the West of England." Also, use 'in' to name subject areas after telling the level of course, but no preposition after 'study': "I did a degree in Philosophy." "I'm taking a masters in Philosophy." "I got an A-level in Physics." But "I studied Philosophy." "I am studying Philosophy". "I studied A-level Physics."

Hi Diego "At"

both are fine..

I think "at" is correct but there can be such situation when you use "in"