Final answer:
The changes in public education since the 1990s reflect a movement towards national standards and accountability.
Step-by-step explanation:
The changes in public education since the 1990s reflect a movement towards national standards and accountability. With initiatives like the No Child Left Behind Act, there has been a focus on ensuring that students meet specific educational goals and standards set by the government. The aim is to improve education and ensure that all students have access to a quality education.