Kid in school purposely broke my laptop?

I am in high school, and my school has a bring your own device policy that allows students to bring their own laptops and tablets. This kid today, who I am sort of friends with, picked up my bag and said "I hope theirs nothing valuable in here" and then dropped it on the ground. I just found out when I got home that the laptop is completely broken, the screen, keyboard, chassis, body, etc. Are all smashed in and shattered. This is a Lenovo Yoga 3 Pro which cost me $1300. I am furious and do not know what to do. No phone number to my school is currently being answered (it is Friday). What do I do?

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