I don't actively hide it, but I won't tell people about it either unless the topic of AS happens to be mentioned, or if I need specific accommodations in the study/work setting. I don't want to tell everyone I talk to about me having AS as they might think I'm just saying it to attract attention and expecting them to care, hence the contextual need for me to reveal it. Also, I imagine that some of the NTs in my Med course whom I reveal my AS to, will probably gossip about it to others so that means I don't have to actively tell everybody.
So far my parents and classmates from high school know I have it, as well as 6 people in my Med course. When I enter my Clinicals at the hospital, I'll slowly tell more people that I have AS as I'll be requiring accommodations then in regards to my education.
If people in my Med course are going to avoid me, treat me like crap, gossip about me negatively, or blame everything I say and do on my AS, then I know that it's them who have a problem and not me as I'm the one who actively learns to cope in an NT world and they are just being superficial a**holes who take their NT social prowess for granted. In other words, revealing my AS can filter out the people who are awful, which is good coz I can then figure out which people to avoid establishing friendships with.