This study compared the effects of multi-age classroom strategies to those of traditional classroom strategies on the academic achievement of fourth grade students in reading and math. Standardized test scores from 20 fourth-grade students in two multi-age third- and fourth-grade classrooms were compared to the scores of 20 students from 7 traditional fourth-grade classrooms. The Stanford Achievement Test (SAT), ninth edition was used as the test instrument. Scores from the students' third grade test in the 1996-97 school year were compared to their scores from the fourth grade test in reading and math by applying T-tests to the data. Analysis of the data revealed no difference in reading or math achievement between students taught in a multi-age classroom and those from a traditional classroom. (JPB)