The purpose of this quantitative study was to examine whether a difference existed in the percentage performance of students earning a pass/advanced score on the Standards of Learning (SOL) Test in math and reading in Virginia's Region IV for schools using an A/B block schedule and those using a traditional schedule. The research also examined if the percentage performance by race--Black, Hispanic, and White--differed on the math and reading SOL Test for Region IV in Virginia. Forty-three schools were included in the study--23 block and 20 traditional schools. The percentage performance in math and reading of each school and the percentage performance by race for each school were studied. Analyses of variance and "t" tests were used to examine differences. The "t"-test results do not show significant differences in the percentage performance of students earning pass/advanced scores in reading and math in block and traditional schools. Significant differences were shown in the percentage of Black and Hispanic students earning pass/advanced scores on the math and reading SOL Test for Region IV in Virginia. A larger percentage of Black and Hispanic students earned pass/advanced scores in the A/B block-scheduled schools than in the traditional schools. (Contains 6 tables.)