What are my options

[Somemenareshit]

Hi. Please if anyone could help that would be fantastic because I am at a loss as to how to move forward with this and quite honestly feel like just giving up and leaving which I know would be the worse possible thing I can do.
il try and make it as short as possible.
Partner of 20 years left and married someone else after 5months. I was forced to leave our home with our two kids and brought a new house. Him and his new wife moved back in the night we left.
i work 30 hours a week and currently have the kids during the week and he has them for a day and a night on the weekend. This is because kids are not adjusting well. I’m happy to support my kids through this as everything has been very rushed.
There currently are a lot of issues but my main one at the moment is he is insisting that his new wife be a part of the kids education and attend parents evening and all events. I do not want to be in the same room as her and nor do I agree that she needs to be involved. In 10 years he has never been involved in it and the kids are exceeding expectations. I do not see why I should have to be made to feel intimidated and bullied. I accept I have no choice about him being there but her is a step too far.
Is there any legal stance I can take? We haven’t been to court but I am considering it but am wanting to know if it is worth it or am I being unreasonable in thinking that only parents need to be involved in discussions and decisions about their joint children?
for what it is worth I have never stopped him from seeing the kids regardless as to my opinions.

No way I'd be having that!! I contact school to say she is a stranger to me and the kids and I do not want her involved in any school activities!
Be strong and don't let them gang up on you!
Not sure on legal side but someone will come along and help

Contrary to what the previous poster says, she is certainly not a stranger to the children since they spend time with her and your ex every weekend.

As she is married to your ex and your children spend a day and a night with them at weekends, she may be classified as a parent under education law. If she is, she may well be entitled to attend parents' evenings and any events that are open to parents. She is certainly entitled to attend any events that are open more widely, e.g. ones where parents can bring other relatives.

I understand that you don't like it. You can certainly see a solicitor and find out what your options are, but I doubt you will be able to get a complete ban on her attending any school events.