Weird that a Mercer Island school board candidate has ALL their kids in private school?

On Mercer Island there are 100s of election signs everywhere right now. Incredibly ugly. I saw one that was particularly big and janky. Looked up the candidate of it, Rob O’Callahan, and found out he actually made all of his signs by hand out of recyclable items with his two kids. I thought it was a pretty great way to stand out.

It got me curious about his opponent in the school board race, Stephanie Burnett. She has those off the shelf signs. But, she has 3 kids who used to attend the public schools and in the last year put all of them are in private schools. Is it normal for school board candidates to actively choose against the school district they are running for a seat on? Seems really sus.