What to wear to class law school

I visited Miami and the kid next to me(backrow) was dressed like Spicoli and another kid was dressed in a suit. The Spicoli kid said to the kid in the suite, “I’m going to have to wear a suit the rest of my life, so I’m dressing like this for school. The kid in the suit just said “this is how I normally dress.”

I’m 28, so to wear slacks and a sports coat is a normal outfit for me, I’ll probably ditch the jacket most days, but still wear a button up.