This was a former school (now a public library) that our tour guide had attended years ago. There was a Star of David over the front door, but he said it was just a common motif in Islamic art and didn’t signify anything having to do with Judaism. I’m not sure I believe that because I understand all the blue in Moroccan cities originated with their Jewish inhabitants, and Chefchaouen is the bluest of them all.

The star over the door on the name plate, not on the Moroccan flag: