On Saturday afternoon, kids can dress in costume and parade across the stage during the intermission of the Portland Ballet’s “Halloween Spooktacular’’ ( John Ford Theater, Portland High School, 284 Cumberland Ave., Portland, Maine, 800-838-3006, www.portlandballet.org, Oct. 31, 2 p.m., advance $13 adults, $8 students; $15/$10 at door). Resident choreographer Nell Shipman takes classic “scary’’ music (“Danse Macabre,’’ “Funeral March of the Marionettes’’) and matches the tunes to funny-scary dances about childhood frights, such as monsters under the bed or zombies dancing with tombstones.