This claim is true, assuming that this official USC website is truthful. On this website, you can see that all types of foods are provided to USC undergraduates, including proteins, vegetables, fruits, grains, dairy, etc. Not only do students have all the tools for a balanced diet, but USC has special meals that can be prepared that cover all five sections of the famous "food plate" (protein, grain, dairy, fruit, veggies.)
The Cleveland Clinic provided a study that showed that "about 85% of people believe their diets to be healthier than they actually are." It is true that many people do not fully understand how to diet, especially within the younger demographic that are attending college right now. I believe that there are certain dietary goalposts we should be striving for, and I believe that USC provides its students with the tools necessary to reach those goalposts.
Sources:
Balanced Diet: What It Is and How To Eat