Sure you can try using masking tape to hold your posters, but if you want them to stay up all semester then you'll want Dorm Tape. This unique tape provides the ultimate hold for pictures or posters without damaging your wall or door. Sticks to a variety of surfaces... even cinderblock! Simply curl our Dorm Tape into a loop and place on the back of what you want posted on your wall. A must have item when setting up your classroom!