The one thing I remember watching when I was younger. The opening music is creep, and the Headmaster is terrifying!
I recently purchased the copied DVDs off ebay and watched it again. And it's still pretty good. The effects are a bit dodgey, and the children have a weird habit of saying brilliantly written dialogue, before grabbing some food and proclaiming that they are "famished". I don't remember anybody talking like that in the 90s!