One of Baltimore’s most dangerous neighborhoods has a special gift.  It’s a blueprint for peace and its working.  You could not find a more likely place for peace on earth to begin. But Rabbi Gela Ruskin is celebrating a Jewish sabbath in a Catholic high school.  Baltimore’s Saint Frances Academy may be the first in the country with a full time rabbi on the faculty.  Every junior in this Catholic school is required to take a full year of Jewish studies.  Some think that is something a devout Christian did not need to do.  But not school president Sister John Frances.