Yeah, looking at her bio, she seems to have enough relevant experience to be fine, but there is just no way the kids are set up for success in a multi-grade secondary mathematics classroom. They’re likely getting very little direct instruction and probably spend the majority of their time “learning” from ed tech.
That's how the vast majority of these sports academy schools are set up. There are "teachers" but the vast majority of coursework is done entirely online.
There's one outside of DC, attached to a multi-sport facility, and the kids each have their own study carrel. They don't even pretend there's direct instruction.