Sixty of the nation’s largest school districts are joining President Obama’s initiative to improve the educational futures of African-American and Hispanic boys, beginning in preschool extending through high school graduation — dubbed the “My Brother’s Keeper” program. The districts, which represent around 40 percent of all African-American and Hispanic boys living below the poverty line, have committed to improve access to high quality preschool, track data on male students so educators can notice signs of struggle as soon as possible, increase the number of boys of color who are enrolled in gifted, honors and Advanced Placement courses, strive to reduce …