The experimental evaluation of the Tools of the Mind Pre-K Curriculum described in this report was designed to examine the effectiveness of the Tools of the Mind (Tools) curriculum for enhancing children's self-regulation skills and their academic preparation for kindergarten when compared to the usual prekindergarten curricula in use in the school system. In order to assess the long-term impacts of Tools on student academic achievement and self-regulation outcomes, students were followed into kindergarten and first grade. Participating classrooms were also observed three times during the prekindergarten year using multiple measures designed to capture implementation fidelity as well as child and teacher behaviors in the classroom. (author abstract)