OP it’s the school itself that’s the problem, not you.
Any mum will know that these early years are shit in terms of kids getting sick. One year when DS was 2 I wondered why I was paying nursery fees as he always sick and at home.
Id the long game here.
You’re very isolated where you are right now. It sounds like being rural you have few friends you can call on, few schools to open up other possibilities and very little in terms of a support network.
Mums like you who do it all need to be in a collective of others like you, so you can help each other.
When your kids become teens they’ll want access to shops, cinema, sports activities, fun things to do. You’ll also presumably want a good choice of secondary schools which it sounds like it’s dicey where you are.
Yes moving is expensive but I’d say you’d be much happier in a market town with quite a number of secondaries to choose from and a chance to build out your social network of support, not just for you but for your kids too.
It sounds like rightly or wrongly you’re a single mum.
Spending evenings and weekends tutoring when your own kids will need you isn’t easy. It’s disruptive and stressful. They aren’t of an age when you could do this.
Even if you get day time work tutoring, you’ll still be alone all day, no social contact with anyone. It’s not healthy long term.
Id put your foot down with DH and put your needs first. He’s not going to do it for you. They only think of themselves and their career and ‘watch me while I go out and save the world’ conveniently forgetting they’ve created two new worlds back at home plus you, that need his support but of course no one’s going to pay him or pay him on the back for that kind of work, are they?
So get selfish because I guarantee things won’t change unless you get serious about balancing things up to get you happier and where you need to be.
Right now you’re modelling your whole life around him not being there to help.
What does YOUR ideal set up look like? If he wasn’t in the picture and you had limitless money what’s your ideal set up? Maybe it is teaching part time, having coffees with friends at a playgroup and your kids with you, walking to primary school instead of driving? Look at that vision, think on it and pull back from there instead of coming at it from trying to fit into his world.