A few school kids and teachers from a school somewhere - not sure what type - possibly a faith school, or is it an academy? I'm not even sure if they're following the National Curriculum!
If your printer has issues printing the witch's angled broomstick, I've added an alternative with a vertical broom and attached hand which will need gluing/pinning to the arm
Acrylics on gesso undercoat. Please tell me you'll paint them better than I do, because I'm rubbish!