You are inventing a situation to try and make the school look bad. The child specifically asked the school not to tell the parents. The school didn’t invent some standard against the parents to not tell them. The child did. Data establishes quite clearly that revealing information like this to parents is harmful to the child.

If we take too much energy from wind it will probably turn out to have negative consequences.

The energy output by a wind turbine has to come from somewhere. It is taking it from the wind.