Complex sentence: A key mission about The Young Women's Leadership of East Harlem (TYWLS) is to care about their social and emotional development of their female students population, Girls we met said that attending a single--sex school helps with their confidence.
Split into simpler sentences: A key mission about The Young Women's Leadership of East Harlem (TYWLS) is care about the social and emotional development of the female student population. Girls said that attending a single--sex school helps with their confidence.