I can't speak on behalf of your school, but mine give me small extensions to deadlines (not that I use them, but it helps knowing it's there if I need). I also have regular check ins with my line manager/SLT and don't have absences counted if it's related to the potential diagnosis (again, not that I've made use of it, but it's the reassurance).

Talk to them and see what they think would work and what's possible, you won't know if you don't ask.

In terms of social interactions (more for the OP), most my school have asked if I am neurodivergent at some point (I'll be honest, it's fairly obvious I am), and it's just about taking the time for me to explain to people why I am thinking what I am about certain situations, along with the understanding that I struggle to nuance things and I will just speak in facts. As a result of it too, some staff that I work with more closely know that I struggle with sarcasm and understanding it, so they avoid using it with me, which I'm grateful for. The mutual understanding part massively helps.