Horrible Histories 'not for school'
The author of Horrible Histories doesn't want his books used in schools.
Terry Deary thinks his books should only be read by kids at home so they remain fun.
He says that he "shudders" to think of his books being used in schools and that children will not enjoy the stories if they are forced to read them.
The author's books have sold over 25 million copies, and of course were turned into the award-winning TV show.
The programme is the only children's TV programme to win best sketch show at the British Comedy Awards. And it's won the award two years running!
The cast say that they've had loads of comments from parents saying it's got their kids interested in the subject and it's been a hit with adults too.
The brand new series of Horrible Histories started on Easter Monday on the CBBC channel.