The way I look at it, if they ask then tell them casually that you're hsing. Same manner as you would if the kids will be going to a private/public school. Make it not a big deal, just another normal, regular option. I think we really should start thinking this way. This is how schooling started anyway, why is it such an eyebrow raiser now? When I decided to hs my then 5 yo, the only person I discussed it with was my dh. As far as I was concerned it wasn't anyone else's decision. It wasn't until my parents/in-laws asked me where my ds was going to school did I mention hsing him. I would have done the same if it was a choice between public or private.
You may end up having those "eyebrow-raising," "eye bugging out" looks from people, when you do just reciprocate with the same look.:D
Joie