Yes, it’s a great shot!
Is this summer school? It seems like all those kids were left alone to socialize and clown around.
The video said it was filmed on June 9th. Maybe it was during p.e. class right before school let out for the summer. It’s okay to give the kids a day of free play at the end of the year.
As for those that say it’s a fake, feel free to go to the school and ask around. It looks pretty real to me.