Original sentence: The No Child Left Behind Act of 2001 (Public Law 107-110), commonly known as NCLB, is a United States federal law that reauthorizes a number of federal programs that aim to improve the performance of America's primary and secondary schools by increasing the standards of accountability for states, school districts and schools, as well as providing parents more flexibility in choosing which schools their children will attend
Edited sentence: The No Child Left Behind Act of 2001 (Public Law 107-110), commonly known as NCLB, is a controversial United States federal law that reauthorizes a number of federal programs that aim to improve the performance of America's primary and secondary schools by increasing the standards of accountability for states, school districts and schools, as well as providing parents more flexibility in choosing which schools their children will attend