Halloween dance at GMS. The Grandview Middle School Peer Helpers and Leadership Class are sponsoring the school's Halloween dance. The dance will take place from 5 to 8 p.m. on Friday, Oct. 31, at the school. The theme for the dance is Thriller, and it will feature a costume contest, candy guessing game and a photo booth. The cost to attend is $5 with an ASB or $7 without, and photo booth pictures are $2.