A Halloween classic from my childhood! ~HalloweenMovie

The Worst Witch, made in 1983, was a televison special which aried
for many years during October. The movie has just arrived on dvd.

Description From Amazon.com

Based on Jill Murphy's book, this charming movie is set in an English
boarding school for witches--complete with orange and black school
uniforms, broom-flying exercises, and potion assignments for lab. The
incompetent student of the title, Mildred, is played by a fetching
young Fairuza Balk. Diana Rigg is the nasty head teacher, Tim Curry
the (oddly) idolized Grand Wizard, and TV's Facts of Life maven
Charlotte Rae does double duty as the school's kindly dean and her
evil witch twin, who's bent on taking over the school. Directed by
Robert Young, this 68-minute video features less than state-of-the-
art effects and several songs that stop the action--most bizarrely an
outdoor assembly performance by Curry that turns into a weird music
video. Still, preteen girls will identify with the beleaguered
heroine who overcomes her wickedly snooty rival, a teacher who
doesn't believe in her, and a band of dastardly witches and, of
course, saves the day.