Hi, I'm going to try and keep this brief. My ex (divorced 2018) has been asking us to pay for half the fees for a private school that my children attend one day per week on day release from regular comprehensive school. This school is a bilingual school (my ex speaks Spanish, and wants them to be fluent in it as well). The kids are primary age, they spend 4 nights a week with us and 3 with him. Nobody pays any child maintenance.
They didn't attend any kind of private school when we were together, nor was there any intention that they would. They attended a different, cheaper school until last year, but since then we have all moved and now he's enrolled them in this new school that they will attend one day per week for the rest of primary. The cost is around £600 per term per child.
We did agree before moving that they would attend this school, and it's in writing that they would attend and that I would help with taking them to and from the school. Fees were not discussed because I assumed he would cover them as he did before since it's really his choice that they attend, and tbh if it were up to me they would not attend at all because of the regular school they miss, but I agreed to this because I accept that Spanish is important to my ex.
I'm on minimum wage, but my partner generally earns quite a lot (although at the moment he is actually between jobs and works in an industry that is somewhat unpredictable). We have a nice house that is worth quite a lot, but also a high mortgage. I don't pay any of this because I only earn around £500 a month (min. wage and part-time at the moment, probably not likely to increase soon).
Am I being unreasonable that I feel that it's his responsibility to pay for a school that he wants the children to attend? They don't even like going themselves. He intends to take this to a solicitor, I think the argument being that even if my income isn't very high my household income is, but my partner is also dead against paying because he says he has no entitlement to it + the kids don't even want to go.
For reference, we generally pay for most things for the kids - we buy their coats and shoes, pay for other clubs and lessons for them, etc. - and I have never asked my ex for money for anything. But I also feel that he is only asking for money because I have moved in with my partner, and for something that we don't necessarily think is even in the children's best interests anyway.
But paying this out of my own pocket would either mean asking my partner for money for it (he would pay it, but I do not feel it should be on him or me either tbh) or cutting down on other things like food/clubs/presents which are often paid from my wages. Ex earns a lot more than I do, though I don't know how much these days. He could afford it by himself, definitely, and lives in a house worth almost as much as ours anyway. If capital is relevant - which is he making it out to be - his capital alone is not that far off our joint capital, and certainly many multiples more than mine solo.
AIBU/WWYD?