This report documents the progress made by the Faxon Montessori Magnet School in Kansas City, Missouri, during the three years of its implementation of the Montessori philosophy. During the 1990-91 school year, the school served children from three years of age through third grade. School enrollment information was analyzed and data were obtained from classroom observation; from parent, teacher, and student questionnaires; and from achievement tests. Analysis of enrollment information revealed that: (1) enrollment was at 93 percent of capacity; (2) enrollments varied by grade level; and (3) minority students comprised 61 percent of the student population. Classroom observation indicated that students were engaged in independent learning activities and activities that enhanced motor skills. Teacher-initiated management was minimal. Results from the questionnaires indicated that program participants were satisfied with most aspects of the program. However, teachers were dissatisfied with the amount of administrative support they received. Achievement scores of kindergarten, first-grade, and second-grade students on the reading, math, and language subtests of the Iowa Tests of Basic Skills were above district and national norms. Third graders scored above district, and below national, norms on the Missouri Mastery and Achievement Tests. Thirteen data tables and seven figures are included, and an appendix presents a description of the goals and activities of the Faxon Montessori extended day program. (BC)