Sorry I'm late with the update.
We found the presents in their room. We crept in at like 3am with some paintball guns and threatened to 'shoot them more than your typical American school'. So they stayed down while we took the presents.
For the past two days, they've barricade our door. We're locked in (with computers and presents, so it's alright). All 7 of us can't shift the door. They keep hitting the door and demanding we surrender our presents for some reason. They actually disabled the internet, which is why I didn't update, but they broke before us and enabled it to bitch about men on Tumblr. They've threatened to call a SWAT team because we're 'holding our sisters hostage in there', despite calling them 'filthy fucking traitor scum' for choosing to spend their time with us males.
We're going out the window tonight (it's about 20 feet high) with some paintball guns. We're going to remove whatever they put in front of our door and set up a camera outside the door so if they try to put it back we can open the door before they can and stop them.