I had this same problem when i was Teaching a two year old class at a daycare the mother and father both knew the child had lice but sent him to school anyway. we had to close the entire classroom clean every inch and tell each parent who were not happy at all then the next day he came back to school his head shaved but the parents didn't give him the lice treatment or treat their home.Sometimes i just don't understand ppl.
Both my daughter and I have had lice and her school will not let a child be at school with live lice. With nits, yes but not the lice. It took us forever to get rid of it. If one child has it the whole class is examined.
As for the mom in the video, shame on her. Absolutely not acceptable.
I would be pissed!! I know when my kids got it from another child, I went straight to the dr and got medicine did the whole routine to get rid of it. Told anybody that came in contact with us, including the teachers.. because they have pillows and such. It was embarrassing but I know I didn't want it passed back to us in a vicious cycle.