Anonymous wrote:OP make sure to visit. Look closely at how engaged the teachers are, and ask about turnover. Also ask about ratios as that is a key indicator of quality.
We have visited centers where the teachers were visibly bored and unhappy. We went with a low-frills center (not in Bethesda unfortunately) where the teachers looked happy and engaged with the kids. There has been very low turnover in the 4 years we have been there. Even those that have left for other jobs come back to fill in for aftercare/breaks. No center/preschool director is going to tell you that their teachers are constantly leaving, but they should be able to brag about their low turnover.
Check
https://www.checkccmd.org/ for licensing violation history.
Also look at their accreditation (e.g. NAEYC) as that can be a sign of quality, though be aware accreditation is expensive to obtain so many centers don't have it, doesn't mean they aren't high quality.