I would send an unsigned letter to parents, notifing them of your concern, I'm sure yours were not the only underage kids there. Parents throwing booze parties do get arrested & jail time for giving minors beer. If it happens after that, call the police at the next party, & tell them under age is drinking,, they do not need to know you made the call, & this will definitely scare your kids. I would also check with cops to see if this is a record that would go on your kids' file, first .

