Title I, Part A, flow-through funds provide local educational agencies with extra resources to help improve instruction in high-poverty schools and to ensure that poor and minority children have the same opportunity as other children to meet challenging State academic standards.  State accountability systems must be based on required standards and assessments and other indicators and must take into account the achievement of all public elementary school and secondary school students.  Assessments must be "valid and reliable" for the state's purposes, aligned with state standards, and designed so that schools receive "itemized score analyses" that allow educators and parents to use them for diagnostic purposes.  No Child Left Behind (NCLB) establishes that all students must be included in assessments and data desegregation, moving toward multiple measures of adequate yearly progress" for schools and districts.   States must define "adequate yearly progress" (AYP) in a way that applies to all student groups, results in continuous improvement, and is "based primarily' on the required state assessment