> Google's threat model may not be your threat model, and it definitely isn't the threat model of my daughter's school. A corporation like Google may be concerned using native applications, written in unsafe languages, written by developers from other corporations in China. That said, Zoom isn't wrong for everyone.

Google's threat model surely differs in some way from a school, but the specific threats you named seem like threats equally applicable to the surfaces identifiable in the threat model of a school.