Divorce and homeschooling

Since most parents still need to be involved in education even if the kids don't live with them, yes,you do. They're still his kids even if you're not his wife.

Tell him? I would. Get his permission? Depends on the court order. I have full legal as well as full physical custody of my kids, so I do not need their father's permission to homeschool, or anything else. But if you share legal custody, then that would mean that you have equal say in all major decisions, and then you would need to inform him and get him on board. Even without that, though, it's good to inform him so that he knows what's going on. He does have the right to be aware of what is going on with the children you share.

If you have joint custody, I would think you should. If you have joint custody, decisions with education are to be joint. Talk to your attorney.

Are you going to home-school around your work schedule? Is that enough time?

Where I live, this is how it works.

If you have full legal custody, you do not need to tell him or get his permission.

If you have joint legal custody, you only have to consult with him on the decision. You do NOT need to agree. If you have primary physical custody and you at least discussed it with him, you can make the decision you feel is best for the kids.

If you have joint legal and joint physical, then you need to come to an agreement.

Why wouldn't you tell him.

My attorney once explained it to me like this: (My ex and I have have joint custody, but I'm the managing conservator.)
If one of the kids were to be put on life support and a decision had to made to keep the machine on or turn them off - I'd have to consult with my ex and consider his options - BUT in the end it would be my decision, as I have the majority (or management) of say. I only have to consult and consider his in-put. With that being said - you do have to deal with him, he is the kid's father. If he has valid concerns and reasons for not wanting the kids home schooled - you should discuss it with him and come to an agreement.
If he does refuse he could take you back to court and the judge will decided if home-schooling is best for the kids. Plus, your out some legal and court cost.
I would talk to him about it...

How can you afford to homeschool? Are you getting that much child support and alimony?

If he's involved with them he'll find out anyway so tell him.  If your kids never see or speak to their father than it doesn't matter.

I would. I say "go girl!"... I'm so glad you're going to home-educate. I sure hope the best for you, mamma!