The purpose of this qualitative study was to explore how early childhood educators perceive the use of Modern Classrooms Project (MCP) in their classrooms. MCP is an instructional model that promotes blended, self-paced, and mastery-based learning with ties to constructivist teaching ideals. Data were collected using a teacher interview, observations, and the review of teacher resources such as lesson plans and student learning paths. Previous research found MCP was effective at the secondary level. Findings of this study showed that early childhood educators found MCP to be an effective instructional model to use in their classrooms. I identified three themes: differentiation, self-paced learning, and time consumption. Findings of this study provide information regarding the use of MCP in early childhood classrooms, specifically kindergarten through third grade classrooms. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]