Here's the trick: send them to school like normal, pick them up a few hours later after attendance has been taken and when your pretty sure they'll be having 3 sets of "specials" in a row, ensuring any guilt you may have had go out the window. It's kindergarten, on top of that it's the first few months of kinder where all of the naughty children are still working the classroom. They're not missing much.
And we'll likely do it all over again. In a few months. Especially after Ty tells me the next day, "Mom, I still like that you took me out of school. I will never forget that day."
Jaden is up next, except her "snow day" takes a little more effort to be sure she's not missing out on important lessons. Ty's was on a whim and he had no idea. Jaden's will have to be scheduled and not near as lengthy.