Recent years have provided an interest on the part of public school systems regarding Montessori as an educational choice, often as a magnet school option. "No Child Left Behind" legislation emphasizes the social and learning needs of individual children as well as a national spirit of accountability for academic achievement, and the public sector is making a comprehensive examination of curriculum delivery systems which can provide benefits for all learners in quantifiable ways, most often in the form of standardized test scores which demonstrate improved student achievement. This study examines the relationship of public Montessori education expressed as Stanford Achievement Test scores in reading and math in comparison with similar scores for students in traditional programs, using a within subjects, matched pairs design of repeated measures over a three year period. Math scores for the groups were not observed to be significantly different, although, following the initial observation, the Montessori group continued to produce increasingly higher mean scores than the traditional students. Marginal significance between the groups suggests that the data analysis should continue to elucidate a possible trend toward significance. Reading scores for the groups demonstrated significant differences, and in the second and third years of the study, Montessori students produced means which consistently outperformed the traditional group.