What are some colleges that are very good for students aspiring to be sports agents.

Here is a list of colleges and universities with a sport management major. It's a good place to start looking! https://www.nassm.com/node/129

Candace Burton provided a link to a great list. Here's my tip-- I would review the schools that offer all three levels of study in sports mgmt: bachelor / master / phD. Those are the ones with the fullest complement of faculty and major support for that program is readily available.