Art is meant to be shared and students make better art if they know there's a chance each piece will have an audience. Besides, it is an art standard for students to learn how to display their work. I start putting the best work from each student aside, at the beginning of the school year, so that I there is always enough to put together a show or enter student work in competitions. In the past we had an annual student art exhibit, but this year, we had three shows, two in the Spring: March….
...and May. Rather than buying frames, I reuse the frames around the school that have been holding the same student work as long as anyone can remember (including people who have been there for 15 years).