I personally wouldn't make any decisions based on this. I worked for one of the big DC dance organizations for many years and our school partner list changed every year – due to funding, available space, faculty, enrollment, plus the big variable of who was managing OST programs each year at each site. We would have loved a super consistent set-up, but it wasn't possible.
I have two kids in DCPS elementary now. There's one company separate from the school that oversees/manages the after-school operations and they both offer their own programs and bring in subcontractors from other organizations, plus a few of the school's own teachers offer programs for part or all of the year. It's as convoluted as it sounds

My older kid has had some good experiences and others where the instructor was late or no-showed most of the time. The programs run by the school's teachers have consistently been the best.