My other half is a high school teacher - she's had I think 4 cases of cough / sniffles that have required a test, with the process being free (as you say), convenient (walking distance - there are many places that offer the swab test), and fast (results back within 48 hours, usually faster, via SMS & email).
I've caught a train into the office 3 times since March - public transport utilisation is wonderfully low (though I'm avoiding peak times), and most people seem to be good about wearing a mask. I've eaten out a half dozen times only, in that time, and again people seem to be behaving and handling things admirably.
Looking around at the rest of the world, it's equal parts encouraging & astonishing just how well we're doing compared to, well, not just the obvious examples, but almost everywhere else.