Wow, totally never thought of it as discrimination due to disability. My son was denied a field trip WITH support from his uncle; ha had adhd and I see signs of ODD. The school did have special duties for him to do in school but I felt it was extremely unfair. Afterwards the teacher lied and told my son they went to another school but the trip was to the planetarium. I am definitely adding something to his 504 plan to address this next year.