I totally get your concern and hope if you did speak to the school you are not in the same situation as me.
2yo came home with unexplained and untreated injury in a spot children wouldn't really get injured. Asked him and he got defensive and threatening. Stopped care because of it bc no court order. Sought medical and spoke to professionals and had support in my decision.
He did try take the child from child care without telling anyone. Child wasnt there and I went to police, they wanted to press charges and they got cps involved.
While they were investigating he engaged with lawyer and started threats of return the child or face recovery orders... but also used that same lawyer to reject the fortnightly supervised time I offered him...
Police could get no answers so can't prosecute and i dont know the cps outcome on his end only my own (bc in my country they investigate both parents).
Its been over a month of welfare checks done on me, threats, even following me and the kids in the car but I have not been served yet...
The most recent thing, false reports to cps.
He said I leave our 2 year old at home by himself for hours... cps saw right through it after having a convo and realising he is doing it out of retaliation and closed the case 40 mins after they arrived at my house but my god... he is willing to risk our 2 year old ending up in foster care than be with a healthy capable parent all because I did the right thing.
My honest advice, report and file in the courts a day after. Get interim or temp custody to protect yourself. Do not be afraid of the backlash of protecting your children.