Cars and vans parking on double yellows and yellow zigzags outside school. Causing an obstruction for all children, the lollipop lady and other cars

School have recently said anyone without a disabled badge can’t park in school grounds, so they have now started parking on double yellow lines and yellow zig zags which is also on the brow of a hill & where our lollipop lady stands. She is now unable to cross the kids safely, parents with prams are unable to get past on the path so they are having to go on the road again on the brow of the hill, we have confronted all the people parking in these places and they do not care at all. Please can we have some assistance in stopping this happening and help keeping the road outside our school safe for all children attending, recently we have had a few near misses with children and the poor crossing lady, & id hate for someone to be injured as some parents are too lazy to park else where and need to park on the doorstep of the school