Another student purposely broke my laptop?

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 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'm furious and do not know what to do. No phone number to my school is currently being answered (it is Friday). The policy for BYOD states that damage to property is not the fault of the school. I was not able to check the condition of the computer after it was purposely dropped because the final bell had rung just after the incident to go home. I'm realizing that I screwed up by not having time to inspect the laptop because it was last block just before the bell rang. I'm not sure if anybody else heard it, but he did purposely drop it after I said that my laptop was in it. Do I honestly have a legal stance here? I have emailed my superintendent, principal, assistant principal, and guidance counselor. I took photos of the damage, the laptop, the case, and the bag exactly as it was. I was with two friends that can vouch for me for two hours after school, I was not going into my bag. It was two hours after school that I left my friends and went inside and discovered it.

Added (1). I have another friend that I walked to my bus with, so I guess that he could vouch that I did not drop my bag going to the bus. I have a teacher that may have seen the laptop in perfect condition earlier in the day. What do you think?

Yes he purposely vandalised your bag - it doesn't matter what was in there - he's still liable as there could have been something medical in the bag that you needed to live such as an inhaler or insulin if you're a diabetic - make him pay even if you have to contact law enforcement

The most important thing now is to get as many witnesses as you can. For what he said, and what he did. Because there's a pretty good chance he will deny it. Try to get the school involved, and if they don't help you, you should take him to small claims court. Technically, your parents would have to sue his parents, because you're both minors.

Go to the police station and file a report on the kid.