It is an impressive feat that vires, artes, and mores have been the guiding philosophy behind one institution for almost 100 years.
Irrelevant statement to open. Not a good sign.
While every decision in my life hasn't been the best, my mores, my character, always led me in the right direction.
At least you move right into saying which value you plan to talk about, and you keep the definition mercifully brief. Still, you are telling, not showing, and so the statement isn't very gripping.
I am proud to say that my compassion and my love of learning have guided me throughout the place I am today.
Decent topic, but again, the delivery is a bit flat because of the telling thing, as above.
The rest of the essay isn't too bad. You have some specific examples and you stay on topic. Better yet, you don't take up too much time saying what you have to say. A couple of expanded narrative anecdotes might be in order though, to add a bit of depth to what you already have.