Elementary and Secondary Education Act
The act was originally authorized through 1965; however, the government has reauthorized the act several times since its enactment—often well after the expiration of the previous reauthorization. The reauthorization of ESEA by President George W. Bush was known as the No Child Left Behind Act of 2001. ESEA was reauthorized on December 10, 2015 as the Every Student Succeeds Act (ESSA) by President Barack Obama.
List of middle schools in England
Middle schools were permitted by the Education Act of 1964, which made additional arrangements to allow for schools which crossed the traditional primary-secondary threshold at age 11. Notably, these changes did not define a new type of school, but rather permitted a variation on existing schemes, while providing for regulations which allowed the Secretary of State to determine whether such schools should be treated as primary or secondary. 
This had not been provided for in the Education Act of 1944.