Better yet, why don't you educate your students on how to behave in society where toilets aren't locked, so that when they wind up out in the real world, they actually know how to use one? Why are you wasting teachers' time by dragging them out of the classroom to unlock a toilet every time a student needs to use the loo? Why are you treating students like prisoners?
Having to run round to find a teacher to unlock a loo when you need to go shouldn't even be on the radar of things for kids to worry about at school.
Which leads me to Family First this week and their latest outrage: new rules regarding restraining children at school undermine adults' authority. New rules require schools to report on any incidents where children are physically restrained.
It means schools have to be accountable for how they physically treat students. You know the stories, the ones we hear about "difficult" kids being locked in small rooms - sadly often autistic or ADHD children - because teachers can't cope with the behaviour, so physically restrain them, sometimes in ways that are inappropriate.
Family First says these new rules, combined with the anti-smacking law, have created a chilling effect whereby parents and teachers are now too scared to physically control or restrain children.
"Children have received the message that adults cannot touch them," Family First said.
That's right! You can't touch them.
If we're going to keep treating students like second-rate citizens, or prisoners, locking up their toilets, and rejecting attempts to monitor how they're physically treated, then we're denying them basic human rights.
I understand the stress of having to deal with the occasional rogue student, or to try to protect against the one or two toilet vandals, but locking the loos, and treating all students like criminals, is not going to fix the problem.