A Jewish ay school is a modern Jewish educational institution that is designed to provide Jewish children with both a Jewish and a secular education in one school on a full time basis, hence its name of "day school" meaning a school that the students attend for an entire day and not on a part time basis. The substance of the "Jewish" component varies from school to school, community to community, and usually depends on the Jewish denominations of the schools' founders. While some schools may stress Judaism and Torah study others may focus more on Jewish history, Hebrew language, Yiddish language, secular Jewish culture, and Zionism.