The latest administration of the assessment provides state-by-state results for 12th graders for the first time. Twelfth graders' reading and mathematics scores on the National Assessment of Educational Progress have improved only modestly in the past four years, according to results from the latest administration, prompting renewed recognition…

The proportion of high school students completing a challenging core curriculum rose significantly between 1990 and 2005--from 31 percent to 51 percent--and students are doing better in their classes than their predecessors did. However, that good news is tempered by other findings in two federal reports. The performance of high school seniors on…