Not everyone’s teeth come out, or maybe just two for some people. The week I got my teeth out at school was sweet, I didn’t have to do a thing for a week and if it was worse I could have stretched it longer. Missing class isn’t as big of a deal as you might think, especially post Covid where there is a recording of every lesson.This is the Coast Guard Academy page. I assure they, they take out all wisdom teeth there and I've been hearing some bad stories from my cadet. As recent as this past week. I can't disagree more with what you're saying, based on what I've been seeing at the CGA. But perhaps medical care is better where your son is. Just throwing out my advice and cadets can take it or leave it. (Of course they should consult with their own medical provider, but I figured that was a given.)
I will say, I missed a sport competition so that was less cool. I thought I could make it without getting them out, but at my commissioning physical they told me they wanted them out and there wasn’t much choice in when I got them out. But I wouldn’t say hard and fast it is better to get them out before reporting unless they are prime ready.
Concur that clinic medical care is usually bad but they have the wisdom teeth thing down pretty good.