Under the federal No Child Left Behind Act, schools were held almost exclusively accountable for absolute levels of student performance. But that meant that even schools that were making great strides with students were still labeled as "failing," just because the students had not yet made it all the way to a "proficient" level…

Tennessee is one of 15 states participating in a pilot program to explore new ways to measure school performance under the federal No Child Left Behind Act. Under NCLB, states are held accountable for ensuring that sufficient numbers of schools' students are meeting state proficiency standards and improving schools that fail to measure up. In…

The No Child Left Behind (NCLB) Act of 2001 requires states to monitor student and school performance based on "adequate yearly progress" (AYP), which essentially is a count of the number of students meeting a specified target. States, many of which have a growing number of schools and school districts entering NCLB's "needs…