The education setting should be working with you to understand how best to support your child or young person. They should have a document that records the child's needs and what supports them. This might be called a SEN Support document, an Individual Education Plan or something else similar.
This SEN Support document has a four part cycle:
This is the "graduated approach". You and the education setting can decide what worked and what didn't in that cycle. Then you can change the plan as needed to help the child or young person make progress.
The education setting must provide successful to your child or young person if they suspect they have special educational needs. If they haven't, your request may not be able to proceed until they do.
If you don't think the support has been right, talk to the education setting first. The Special Educational Needs and Disabilities Information Advice and Support Service (SENDIASS) gives impartial help and can support you when talking to the education setting.
You can choose to continue with the checklist anyway.