However, the population has grown exponentially since the introduction of standardized testing in the 1800s, making it harder to keep the same levels of continuity throughout the nation with such a vast number of variables in educational and physical environments. No Child Left Behind faces significant challenges in maintaining its ability to accurately compare the results of students and schools to one another based on the fact that each state is required under the law to construct their own requirements for proficiency for each subgroup and school as a whole, but also to create their own state-wide standardized tests that coincide with new
However, the population has grown exponentially since the introduction of standardized testing in the 1800s, making it harder to keep the same levels of continuity throughout the nation with such a vast number of variables in educational and physical environments. No Child Left Behind faces significant challenges in maintaining its ability to accurately compare the results of students and schools to one another based on the fact that each state is required under the law to construct their own requirements for proficiency for each subgroup and school as a whole, but also to create their own state-wide standardized tests that coincide with new