He may not be perfect but he does look better than allot of the calves I see hauled to our fair (and the kids pick those calves out). Feeding him to meet his potential is your goal, in the lottery system if all the calves are similar in type, the calves that get fed right, don't fall behind do to injury or sickness should rise to the top. He looks to have enough muscle and frame to make a good fat steer, fed and managed so he hits 12:00 at the right time should put you in a competitive position.
Things that will help: Feed him a quality feed, keep him on a tight schedule, increase the feed volume as he grows to keep him around 3 percent of his body weight of feed a day, and work with him daily. Clean pen and water.
The things not to do since he is at the school farm: randome feeding times (weekends can be the worst) run out of his feed and use someone else's feed that is different than yours, not work with him a few days because of any host of school and outside activities. Anyone of these things can throw them off track, they get used to a routine, deviate from it and it can cause them to stress.
Consistency and Persistence is what it takes.
Have fun and good luck.