Skipping two grades (third and ninth), Shapiro went from Walter Reed Middle School in The Valley to Yeshiva University High School of Los Angeles in Westside, Los Angeles, where he graduated in 2000 at age 16. His mother was an executive of a TV company, and his father worked as a composer.
He started playing violin at a young age, and performed at the Israel Bonds Banquet in 1996 at twelve years of age. When he was 9 years old, his family transitioned to Orthodox Judaism. Shapiro was born in Los Angeles, California, to a Conservative Jewish family of Russian-Jewish and Lithuanian-Jewish ancestry.
