Hayley has made a special Newsround report looking into the issues around excluding children from school.
Sometimes children do misbehave and schools can try to stop that misbehaviour. They can send you out of the class or in extreme cases, they can exclude you.
The Children's Commissioner for England, Dr Maggie Atkinson, is someone who speaks out about children's rights and she has carried out research that suggests 1 in 20 schools are breaking the law, by excluding children without recording it.
If the school's local authority is not told about an exclusion, it could mean children are missing out on an education without the government being aware.
There are certain rules that make exclusion fair and in line with the law. These are:
1: You must have broken your school rules
2: Only the head teacher can exclude you
3: A responsible adult needs to be told about the exclusion and there needs to be an adult at home before you can leave the school
4: It must be recorded officially by the school and your local authority
5: Both you and your parents have a right to appeal.
If these rules aren't followed, then your school could be breaking the law and treating you unfairly.
Michael's problem with authority figures saw him labelled as a troublemaker. He fought and was regularly in trouble. His negative attitude carried over at school. Other pupils began distancing themselves and teacher's became worried by his poor attendance and performance.
Then Michael joined an xl club and his negativity stopped, his school work improved and he discovered a passion for youth work.
Michael lives in Bute, Scotland and is being helped by The Prince's Trust scheme for expelled pupils.
If you feel you are being treated unfairly or you feel you're missing out on school and want some help, then these are some of the charities that can help. The BBC is not responsible for the content of external websites.