[header] How to manage chronic pain at school [title] Get up and stretch. [step] If you find sitting down for long periods of time increases your pain, try to take 5-10 minute rest breaks during the school day. This will help prevent your muscles from stiffening, and hopefully reduce your pain. 
[substeps] Ask to leave and walk down the corridor for a few minutes during a lesson if you feel uncomfortable sitting and you are finding it hard to focus. This will enable you to regain your focus, and lower your pain, so it is easier for you to cope.