School Play Rejection

My older son, R., tried out for the school play, "Alice in Wonderland." He's a shy, quiet kid who was never interested in acting but his school had a Shakespeare workshop and he loved doing that so he jumped at the chance to be in the play.
After he tried out, my friend, who is helping to organize the play told us, "Raymond was great. He was really fabulous." But he didn't get a call-back and when the posted the parts today he was, "Diamond Two," and I'm sure he's really disappointed.
Rejection. You want your kids to put yourself out there but when they do, they're bound to get rejected. Of course, we have to be proud of him and encouraging and tell him stuff like, "There are no small parts just small actors." But honestly, don't these stupid people realize how talented my son is. I want to throttle them. OK, I've had my little hissy fit. I guess I can't be one of those moms who calls up and complains even if these people are idiots. Instead, I have to be understanding and serene with them and with my son. That's show business. We'll try and encourag him in other ways and if we don't make a big deal it won't be a big deal to him.
I reminded my husband that it's really not about us and we should admit that we had visions of seeing R. in his starring role. Instead, he'll be out there as the two of diamonds saying his 1 or 2 lines. Oh well. I'm sure it won't be his last rejection so we better get used to it. He can talk about this in interviews when he goes on Broadway. Ha.