In most of the Jewish congregations, the years before the Bar and Bat Mitzvah event are spent preparing for it. Many will require the teens to attend a certain number of Shabbat services at a synagogue, take on a community service or charity project, attend Hebrew School, as well as to maintain a good standing with the synagogue. This has spawned a cottage industry of tutors offering services which includes teaching Hebrew, basic Jewish concepts, Torah cantillation, and arranging community service efforts.