Does your Stationery ever get stolen in school?

these stupid girls take my stuff without asking or ask for it and then take my pencil case and take my stuff. this is because they never bother to buy their own stationery, also if my back is turned one of my pens or pencil is stolen! next year it is an important year and should i even bother with buying good stationery? also people even take and borrow this girl's fine liners as she is the only one who brings it. i really hate getting my stationery stolen!