I think you'd want to emphasize the 80% rule a LOT. Students want to have fun. Introduce the idea that if they are 100% Mon-Fri with nothing out of line, they can do 2 or so social meals and a few drinks over the weekend and still hit 80%. You probably aren't going to convert the ones who live to party, so don't bother unless they are already open to it, obviously.
My college had an online nutritional facts/ingredients list for all the food in the dining halls, which was AMAZINGLY helpful. If yours doesn't already have that, start a petition to get them to offer that information at all times online, using the "we all want to take care of ourselves" type argument. If you do have that, make a list of the foods that are primal/paleo and distribute it when people become interested. They may find that they have longer lasting success with a menu to choose from.
Again, support and social involvement are going to be key. If you get a small group going, see if you can work out after class and then go to dinner together. You're in college, so you're allowed to go out to eat in sweaty gym clothes. Embrace it while you can! College is the easiest place to make friends and influence each other, so it should be easier to find or generate interest.
Type 1 Diabetic. Controlling blood sugar through primal life.
Maintain A1c of 6.0 or lower
More dietary fat, less carbs, moderate protein
LHT and sprint as per PB fitness