Sad but true - DS loves science and engineering, and it always works better to have DH do the asking for these kinds of activities. I am pushy hot-house Mom, he is engineer/ computer kinda guy who speaks their language and has credibility. If he talks code with the teacher and says DS is ready to program advanced Java, he is believed. I am not.

And to agree with HK, just beg them to try it and convince them you are totally willing to withdraw if they feel he can't handle the content or the older kids. Occasionally they'll try, and after they try once, they stop fussing.