The map above shows where schools close for Jewish Holidays. Reddit user jonross14 explains more about how he created the map:
My wife and I created this map. A colored county means that at least one school countywide closes for Jewish Holidays, not necessarily all schools in the county. We also designated a county if they only closed for one Jewish holiday, for example Yom Kippur but not Rosh Hashanah, or if a district consistently gives a PD (teachers-only) day on a Jewish holiday. TL;DR if any district in a county closes school to students for any Jewish holiday they are included in this map. Enjoy!
If, like me, you’re not familiar with the major Jewish holidays they are: