It’s getting to the point where teachers will have to have security cameras running in the classrooms at all times and the parents/guardians will need to sign a consent form for their kids to be filmed as part of the regular school enrollment papers.
Then these conferences would be a matter of playing back the tape and saying “This... is unacceptable in my class. This... is also not allowed. This behavior needs to be curbed as well” as the evidence of misbehavior plays out on the TV or computer monitor. Oh, and as an armed security guard stands nearby.
Your school system doesn't have cameras in the classrooms? Is it a one room schoolhouse?
And no, they don't ask the parents first.