Final answer:
The goal for all children in America to be ready to start school was underscored by programs like Head Start and legislation such as the No Child Left Behind Act.
Step-by-step explanation:
The primary goal that "All children in America will start school ready to learn" was established by the federal government initiatives including the Head Start Program and the No Child Left Behind Act (NCLB). The Head Start Program, created in 1965, aimed to provide low-income children with preschool education to ensure they were prepared for school. Additionally, the NCLB Act of 2002, signed into law by President George W. Bush, focused on closing the achievement gap and ensuring that all children, regardless of their background, were given the opportunity to succeed academically. These programs and laws were steps toward the fulfillment of this aspiration.