The Afterschool Alliance is a nonpartisan, nonprofit organization in the United States whose mission is "to ensure that all children have access to affordable, quality afterschool programs." It uses communications and advocacy strategies to increase public and private investments in afterschool programs. The Alliance serves as both a central resource center for afterschool programs, as well as a public advocate.^{[citation needed]} The Afterschool Alliance has more than 25,000 afterschool program partners and its publications reach more than 65,000 interested individuals every month.

The Afterschool Alliance was established in 2000 by the Charles Stewart Mott Foundation, the U.S. Department of Education, J.C. Penney Company, Inc., the Open Society Institute/The After-School Corporation, the Entertainment Industry Foundation and the Creative Artists Agency Foundation.

The Afterschool Alliance grew from public awareness efforts undertaken by the Mott Foundation through a public-private partnership with the U.S. Department of Education to expand afterschool programs through the 21st Century Community Learning Centers initiative. The federal government provided grants to local communities for afterschool programs, while the Mott Foundation funded training, evaluation and public awareness activities. The Foundation and the Department's efforts caught the attention of several outside entities with a shared interest in achieving afterschool for all. These groups came together in September 1999 to create the Afterschool Alliance, which was formally incorporated as a nonprofit in 2000.^{[citation needed]}

Today, the Alliance works with a broad range of organizations and supporters, including policymakers and policymaker associations, advocacy groups, afterschool coalitions and providers at every level, business and philanthropic leaders, technical assistance organizations and leaders representing a variety of interests, each with a stake in afterschool.^[1][2][3]

On February 24, 2014, Representatives Dan Kildee (D-MI) and Rosa DeLauro (D-CT) introduced the Afterschool for America's Children Act in the United States House of Representatives. The legislation would reauthorize and strengthen the 21st Century Community Learning Centers (21st CCLC) initiative—the nation’s chief federal funding stream for afterschool programs—by supporting innovative advances taking root in before-school, afterschool and summer learning programs. The bill was companion legislation to S. 326 introduced previously in the United States Senate. More than 110 national, state and local organizations signed a letter in support of the legislation, including: Afterschool Alliance, After-School All-Stars, SHAPE America – Society of Health and Physical Educators (formally AAHPERD), American Camp Association, American Heart Association, Camp Fire, National Association of Elementary School Principals, National Education Association, National Alliance for Partnerships in Equity, National Farm to School Network, National Science Teachers Association, Save the Children, and the United States Soccer Foundation.^[20] Kildee reintroduced the legislation in the 114th Congress on February 24, 2015.^[21]

The Afterschool Alliance also spoke out in favor of the Child Care and Development Block Grant Act of 2013 (S. 1086; 113th Congress). The bill would reauthorize the Child Care and Development Block Grant Act of 1990 to provide block grants to the states to help low-income parents find child care for their children.^[22] In addition to reauthorizing the program, it amends the law to require background checks on grant recipients and annual inspections.^[22] The Afterschool Alliance supported the bill, saying "it is important to emphasize the value of quality school-age child care to achieve positive outcomes for children, including improved academic performance, work habits and study skills.^[23]