Family Friendly Schools Act This bill directs the Department of Education (ED) to provide grants to local educational agencies to establish family friendly school policies that align the school day with the work day to better support working families, and to establish a supplemental 21st century community learning centers grant program to support programs and activities during summer recess. Specifically, ED shall award five-year grants at 500 elementary schools that align the school day with the work day; report to Congress at the three-year mark and at the conclusion of the five-year grant period on best practices and recommendations for aligning school and work schedules, and for strengthening partnerships between schools and community resources; and carry out a supplemental grant program to establish or expand community learning center summer programs.