My solution (if I was in charge)
Letter to Parents:
Dear Parents,
It appears the majority of students in the __________________ school system are determined to forgo all classes in an attempt to appease social media, therefore, all classes are suspended, and the school will be closed for the remainder of school year 2017/2018.
Schools will re-open in September, 2018, and students may return then with no advancement of grades or levels.
It is our sincere desire to continue this year, but the effort seems futile, and without parental cooperation in enticing these students to return to school, it is our only recourse.
Thanks.
I would love to see that happen, but because I know that it won’t, my instinct is to buy more ammo.