<p>My dad taught undergrad classes when he was a grad student at Yale. He remains the best math teacher I’ve ever had. I don’t think TAs are an inherently bad thing - they might even be more excited about the material than a professor. </p>
<p>Anyway, if possible, I urge you to visit and have your son sit in on classes so he can see for himself. And do know that the overwhelming majority of Yalies absolutely adore the school, as T26 said.</p>