I'm sure you are very busy this weekend crafting an apology for the actions of some of your students. If I can make some suggestions
You are responsible for that milieu. So are their parents.
So when you release your statement and your apology, please keep that in mind. He is a reflection of you and your schools. He is a mirror. Him and the crowd of boys cheering and clapping and mocking. Look hard at that mirror. Do better.
And write a good apology.