At Montessori schools, students are given tasks called "practical life" exercises. In these exercises, students learn to take care of themselves and their environment. Students at the Robert Goddard Montessori School are also familiar with the drill of workbooks, testing sheets, and homework--features that would never be part of a private Montessori school. The pre-K-8 school in the 134,000-student Prince George's County school district outside Washington is responsible for staying true to the teachings of its founder, Maria Montessori, and also for preparing students to score high enough on Maryland tests so that the school can meet its target for adequate yearly progress, or AYP, under the federal No Child Left Behind Act. The 350-some public Montessori schools across the country are feeling the same pressures. This article shares the sentiments of public Montessori schools to the testing and accountability mandates of the No Child Left Behind law that run counter to the beliefs Maria Montessori held about how children learn. It also discusses the concrete changes that they have had to address under the law.