I take it that since you mention a school uniform that you might go to a private school. If that's the case then some of the above items might not be a problem. But if you go to a public (government) school, then those items could cause you some problems.

You may consider having the school administration review/approve the more risky items in your survival kit so you don't get a school suspension or get expelled.

Unfortunately so many of the "zero tolerance/intelligence" rules and laws used by schools these days will punish you for your preparedness. There are too many stories of kids getting kicked out for having fingernail clippers, butter knives, and medicine.

However, Bravo to you for being so foresighted.

Regards,

Tom A.