Have to agree with the College.
Let's be realistic, kitchens are made for normal height people, all the tools and equipment will be out of his reach, he would need a step-stool to reach anything and even then, somethings will still be out of reach.
On top of that, it's dangerous, all the cooking pots and everything will be above him, if one of them got knocked, it will go all over his head.
He's already having to stand on something to reach over.
So if he does find a place to work, he's going to have to carry or move his stool around with him, that's he's standing on all the time and handing food? That's sounds nasty. I doubt he has the discipline to only move it around with his feet.
On top of that, someone could trip over it or catch it with their feet as he's working and making him fall over, possible making the hot food or pans fall all over.
Kitchens are very hot and busy places with high emotions flaring a lot, it's risky.
If he was working alone or with a very small staff, could reduce the risks.
When I think about it, is there a wheelchair chef? How is that going to work in a kitchen?
Anyway, I finish by saying I'm sure he make a great chef and his food will be good, but the work environment would be dangerous.