1 of 5
Laura Seitz, Deseret News
Students, teachers and parents of The Open Classroom dress in costume for Halloween in Salt Lake City on Wed., Oct. 31, 2012.

You may already have purchased candy and put out decorations, but how much do you know about Halloween? From Halloween's origins to the most-popular costumes of the year, this list will provide the last bit of information you need to feel prepared for tomorrow, Oct. 31.

See the list.