Congrats, DD. Awesome that your son got through and graduated.
Girl of mine will find out next week if she finished half of her exams. She'll do the other half next year.
Believe me, there were some times that made us question the "wisdom" of sending him to public school.
We thought how making him a project for more researchers could be worse than being thrown in the river with the advice, "sink or swim."
He has two "friends" that he made in high school. They mainly interact on Skype or via email or a few games they share, but this may not have occurred at all if we had coddled him into our bosom and prevented the world from doing its worst to him. He Made It.
I might say, "Good luck," in the case of your youngling, but since much of this is a performance, maybe I should say, "Break a leg!"