The Young Women's Leadership School of East Harlem (TYWLS) is a public all-girls school in East Harlem, Manhattan, New York City. The school serves approximately 440 young women in 6th through 12th grade. It is part of the (YWLN).It was founded in 1996 by Ann and Andrew Tisch and New York City's . They believed that it would help school families because in other public schools many girls weren't heard and the graduation rates were low. Then-Chancellor Rudy Crew led the project to the unanimous support of the New York City Board of Education.