My parents home is almost directly in the very center of the totality. The kids will miss that day and the next as we drive 10 hours back home. Definitely looking forward to it and glad they are in grade school so there is no concern about the trade offs of their school assignments to the experience.
Be prepared for an avalanche of traffic getting home.
If it's like 2017, traffic out of totality regions will be very, very memorable. :\
I am taking kids out of school for a few days and driving 13 hours to a cabin that I rented on a lake on the centerline. It helps that my 40th birthday is within a couple days of the eclipse.