Enforce standards?
The mom's should know better. Isn't that what the chinuch in school is for?
It's obviously shallow and hollow if all the girls know that once they become an eshes ish they can have hair as long as they feel. This is exactly what is wrong with the chinuch system. Not the ruler.
The idea is when you CREATE this SET length saying this is appropriate (implying nothing else is) and then kids see very eirlicher Yidden walking around with their hair an inch longer.. what are they to think?
And then if they haven't REALLY learned what tznius means by then they will be walking around however they see fit.
There are two issues here.
1. How this was posted, the video going around and the hatred being communicated in both directions.
2. The issue of having a school set such lengths and enforce them and how they go about that.
2 could have been spoken about and brought into discussion without having to post those pictures and that video in my opinion.