From how I understand canon…
Dick was an average student who seemed more enthusiastic to go on patrol with Batman and Superman. He tried university for a while.
Jason took his studies seriously. He was the top student in class (with the report card to prove it)!
Tim naturally has superior intellect, but is often distracted by his dedication to vigilante work (thus, not a “model” student). He has plans to go to college.
Damian was pressured to excel at everything. He received incredibly expensive and topnotch homeschooling from a very young age (with a curriculum probably too tedious even for most adults).