let me give you the "pole-up-the-ass authority" answer.
you have no reason to bring this weapon to school, reguardless of it is sharp or not. it does not help advance your education. It can also be used to threaten the students and the faculty. In that, it breaks the safe-school policy. The safe-school policy is in place to ensure that the students can learn safely in a risk and danger-free environment. Every day violence occurs at the hands of an adolescent, and it is unneccesary and intolerable. As a strong supporter of the safe-school policy, we believe that you have put others at danger and have threatened the ability of others to learn safely. thusly, you will be expelled for a set time that we deem necessary, and it will be marked on your police record.
now as you may have noticed, all of that is bull**** considering that your bringing in a BUTTER KNIFE WITH TWO HANDLES. But schools are stupid, stuck-up, and afraid. very very afraid. and it is lame ass.
so I suggest you dont, but you ask if you could and fight what rediculous things they may say.