School called Child services on me because my kid didn't have a helmet on

Is this a little much? I'm thinking about changing schools because the principal decided that talking to me first about my child not having a helmet on wasn't an option before someone decided to call the CAS on me. I admit I might be in the wrong but aren't they being a little combative towards my family? It's a serious thing to do, call CAS on someone.

Would you change schools for the principal calling CAS on you?

ITS A NON MOTORIZED BICYCLE. we live close to school