Does anyone know the name of a children's TV programme that was like Harry Potter?

It's really bugging me but I can't remember the name of the show.


It's about three friends (the red-head was meant to be like Harry, the black-haired girl was Hermione, and the blonde boy was Ron), who go to a magical school. In their spare time, though, they fight this evil wizard-man (I only just realised that this was meant to be Voldemort).


The Headmistress turns into a cat and instead of broomsticks, they have flying scooters.


Help?

Does anyone know the name of a children's TV programme that was like Harry Potter?
just guessing was it the The Worst Witch