Starting to map the different DMU's at the different collage's you want to sell your goods to is probably a good starting point. I would try and use LinkedIn for that. You'll probably looking for a chief executive role. Depending on what you are actually selling you could try to be at network events where these people attend to as well and see if you can find a 'hook' , a problem they are facing which provides an opening for you product.

If you have any follow up questions, feel free to plan a call