I'm pro-homeschooling for all the reasons but I find it super weird when you ask someone what grade their kid is is and they respond with something like "we don't do grades"

Well then tell me what grade level they are doing schoolwork at. Or what grade you tell the authorities they are taking.

Or 12 - (number of years until being done). Because that's what I actually want to know half the time—the other half being how many years have they been a "school aged kid" for.

To be fair I've only heard this maybe twice in recent memory. It just sounds SO WEIRD when I hear it.