GST not charge to School by service industry.

I think you can sale service with Gst tax to unregistered person because school is not registered in Gst so sale will be considered to unregistered person. this is my view. I am not 100℅ sure

School cannot charge GST as they are providing Educational Services. But if you are providing services which are not directly related to Educational services(Teaching or Contract teachers) then you can charge GST and As Schools are not Registered under GST you have to Pay as per RCM in the current and take Credit of the Same in the Next Month.

Mr. Anuj if you are providing taxable service than there must be charged GST whatever the receipent is.

Irrespective of recipient you have to raise service invoice with GST as its your liability and not his