Yeah, there's a funny "tragedy of the commons"-like dynamic going on here. While it may be a rational decision for each individual parent to hassle their kids'

Yeah, there's a funny "tragedy of the commons"-like dynamic going on here. While it may be a rational decision for each individual parent to hassle their kids' teachers for every possible issue, the cumulative effect is that those that can get another job will leave because their job is made so unpleasant, ultimately defeating the goals of all those parents.