Permanent exclusions from schools in England have risen over the last decade. Neil Maggs explores why this might be happening - and what happens to the children who are excluded from the classroom. He visits a pupil referral unit where children are sent if they are excluded from a mainstream school; a school in the North East of England that excluded just one pupil last year to see what it's doing differently, and speaks to experts to see what factors lie behind school exclusions. Presenter: Neil Maggs. Producer: Fergus Hewison. Technical producer: Richard Hannaford. Editor: Richard Fenton-Smith.