When I worked at a ComputerLand franchise many years ago, one of the sales people struck up a deal with a local (and pricey) arts college for repairing students computers. It didn't end up being a good deal for us.
While yes colleges do have their own IT....it's in-house IT and they usually aren't setup retail, they are overwhelmed with in-house IT related stuff.
While we in the US do have these entitled millennials....I'm not sure about the culture of the OPs country there, I might think students in those colleges are more appreciative and hungry for success. I don't know for sure but I suspect that computers may be older, budgets may be lower, and parts...pricier and harder to get.