- The Jewish Community High School of Gratz College is a pluralistc supplementary high school for Jewish teens in grades 8 - 12. We educate our students to be knowledgeable about the culture, traditions and language of the Jewish people. We provide affiliated and non-affiliated teens with formal and informal Jewish education programs in a trans-denominational setting. We provide our students with a caring and respectful atmosphere, taking into account each studentâ€™s social, emotional and intellectual needs and abilities. Through JCHS, there are many opportunities for active involvement in Jewish life during the teen years, assuring development of positive adult Jewish identity. We develop feelings of belonging, loyalty and responsibility to the Jewish people so that teens identify with the local Jewish community and the Jewish people globally.