The Worst Witch 3x7

Miss Hecketty Broomhead returns to Cackle's Academy to take over while Miss Cackle goes to look after her sick aunt. She takes an instant dislike to Mildred & even forces her to wear a tracking bracelet at all times! Meanwhile her insistence on rigid time-keeping proves to be quite the problem, especially when she is considered to be a permanent replacement for Miss Cackle!