Marlet,
This is just my first year, and I'm learning on the fly here - but I think that the teacher contact varies from state to state, in terms of how frequently, whether it's face-to-face, or etc. Here in WY, we apparently have to talk to her once a week (on her dime, not mine

). She scheduled a time with me. Then in October, we go to every other week for our phone calls. So far I've had two calls (one 'get to know you' call, and then another two days later on our scheduled call time). She wanted to talk to Ina too - it sounded like she and Ina had a good conversation, and she wasn't weird about how softly Ina talks on the phone. Wanted to know if our boxes had arrived yet, urged me to work ahead on the online orientation course, asked what we were doing for PE, etc. We ended up having a very pleasant conversation and she seems to be pretty much in the mindset that this program is so kids can do less make-work and progess at their own speed, have more time outside or etc. rather than having to be "in school" all the time. That attitude may vary with other teachers though!
I think all Virtual Academies, since it's 'public school,' are required to take the same standardized tests as the brick and mortar students. So, if ID starts testing in K, then your child would need to do the tests too. They require the standardized tests here .... We just take her in to a school that they've arranged for Ina to test at.
You may want to look into (if you can afford it) getting their non-affiliated program. We looked into it, because we thought the teacher etc. was more intrusive than we wanted [before we talked to her, she seems OK so far to us]. But the cost is nearly $5,000/year. We decided we could make this work for this year. I don't know, but I suspect that families who have done this for multiple years probably don't have to be 'checked in on' as much by the teacher?? Maybe that's wishful thinking on my part.

ETA:
I didn't ask about what happens if we stop out of it midyear. I would assume, if you put a child into public or private school, you'd be able to just 'transfer records' to that school. I think when I was first researching k12 here, there was a mom who said she'd pulled her kid out of k12 midyear and just done her own curriculum. I don't know what was involved.