Dottie and Alexsmom, thanks for your quick replies. I apologize, I am a relatively new reader and don't understand the reference to 'what's with the FB thumbs up?" but didn't mean to offend.
I appreciate your insights and the point about lessening the guilt. We keep revisiting instances over the past 2 years...one that galls my DH the most is that our son placed first in 2 separate teams for a school mathletics contest, but the gifted teacher chose not to have him represent the school at district; she instead only chose from her gifted students. To think he would have been in that class. So yes, some parental emotion is at play.