Jealousy from own school-aged child

[Starshine]

I don't have this issue, as my son is home-schooled.

I think your last sentence is where you need to start. You said that he doesn't fully understand why he needs to go to school. I would tell him what your reasons are for why he needs to go to school. I've heard so many parents tell their kids that they "need" to go to school, but don't give them a reason.

I would also be prepared for him to ask, if he hasn't already, why he can't stay home with you. If he knows that you are home and able to care for him, since you're caring for other kids, it's going to be difficult for him to understand why you are sending him elsewhere--know what I mean?