Good thing you go to a private school, because in many public schools the Ipod or the cellphone would get you suspended, the Ibuprofen, antacid, SAK and needle and thread would probably get you expelled (zero tolerance: drugs and weapons, albeit the dumbest concept I've ever heard).

To be honest, I'd be more worried about carrying books, homework, pens and pencils, and a calculator in high school. OK - I didn't carry a calculator back in high school, but I don't think you'll find too many slide rules like I had still available these days! There just aren't too many foreseeable emergencies I can come up with for high school. The most foreseeable would be needing a gun for self defense against a whacko schoolmate gone crazy, but I doubt those are allowed. Nor are they advisable, for someone of high school age. No offense intended.