My son lives with his birth mum and stepdad and my ex won't tell me anything that happens at school.the school ring my ex when I contact them

Do you visit the child on a regular basis. Is the child calling you from time to time.

What court ordered visits are there. Does the court order say that you have a right to contact the school. Do you have joint legal custody ? And she just have phsycial custody?

In my child custody order it specificly says I have a right to see school records and so on.

And do you care if they call the mother, as long as you find out how the child is doing.

We see the child every fortnight for whole wklend from fri to sun.we have nothing in writing from the court.it was just between me and my ex wife.its my ex wife who says I have no rights and sending nasty texts if I contact school again.she blackmailing me

You have basically no rights till you go to court and get a court order in writing

I am the children birth father.so if I have no rights I don't have to pay csa then

i am the children birth father.so if i have no rights i dont have to pay csa then

That is technically true. Morally not so much.

i am the children birth father.so if i have no rights i dont have to pay csa then

I certainly hope for your children's sake that I'm interpreting that the wrong way.