DS start school in Sept. Have had a lot of problems with DSs dad (ExH) since splitting 2 years ago. He frequently misses arranged contact with him and has on occasions turned up unannounced at his nursery to see him and caused a lot of upset when he was let in. ExH can be very unpredictable and unreliable depending on his mood and his life problems. Nursery know the situation now and won't allow entry to ExH even though he has parental responsibility.
Does anyone have any advice please about how to broach this subject with school. I need to keep DS safe and happy but find it very hard to describe what exactly the problem and am worried they will think I'm a drama queen or over protective mum before DS even starts there.