Then how would you consider which university was worth going to and which not? When my university offered the exchange program they said that I could apply to o

Then how would you consider which university was worth going to and which not? When my university offered the exchange program they said that I could apply to over 100 different universities from around the world. I wasn't about to start emailing and calling over 100 places to see what research, lectures and seminars that they offered. I took the list of 100+ universities, removed the ones from countries that I didn't want to visit and then checked their rankings. If they were ranked more that 100th in my major then I removed those universities as well. Then I had a much smaller list of universities that I could look into.