Is it true that ADHD is not considered a disability as far as The Equality Act 2010 is concerned?

This question relates to a case we were told about recently: my 8 year old son was recently given a fixed term exclusion for ‘non-complaint behaviour’, the worst of which seems to have been using the calming fiddle toy we had given him during lessons. He does not have an EHCp but we are looking at that. He has been diagnosed with ADHD but we believe he also has a number of difficulties outside the ADHD diagnostic criteria.  We believe this exclusion amounts to disability discrimination. Our first response was to complain to the Academy and eventually a meeting was held which was chaired by the Chair of Governors who claims to have decades of SEND experience. At the start of the meeting, she questioned the legitimacy of our concerns as, as far as she was aware, ADHD was now not considered a disability as far as The Equality Act 2010 is concerned as this is what she had read in a local newspaper.

Please explain public task as lawfulness for data processing in context of EHCPs that a ) LAs and b) Schools rely upon? I believe the public task ...

... of the LA is to have processes in place for dealing with EHCPs i.e. NHS commissioning agreements, assessment processes etc. But PUBLIC TASK does not mean that sensitive specific individual data can openly/ without parental or child consent be processed with whom the LA deems appropriate ie. school consultations or third parties.This would need to be agreed. PUBLIC TASK in terms of EHCP/SENDIST means that processes are in place.

LAs quote public task as lawfulness to share and obtain your individual data with third parties without your knowledge in EHCPNA and SENDIST. I don't agree and no one can explain this to me in simple SENDIST/ Education terms. Please can some one explain this as I believe LAs and schools are misquoting to obtain and share data strategically in sendist to blindsight parents

Can I download the Noddy 'No-nonsense' Guide as a pdf?

Can I find the latest updates to the Noddy No-nonsense Guide to SEN law?

09.330 Can the LA provide SEP outside of a school or educational institution?

08.23 Can the LA require parents to provide education?

09.339 Is the LA’s duty to provide suitable education under EA 1996 s19 the same as EOTAS under CFA 2014 s61?

09.337 Can parents agree to provide some EOTAS?

09.338 Is elective home education the same as EOTAS under CFA2014 s61?

09.336 Should there be reference to EOTAS in Section I?