This document discusses curriculum development processes and models. It defines curriculum development as a planned, purposeful, and systematic process for creating improvements in education. There are typically four phases: curriculum planning, designing, implementing, and evaluating. Curriculum models provide formats for curriculum design to meet unique needs and purposes. Some well-known models discussed are Tyler's model, Taba's model, and the Galen Saylor and William Alexander model. Tyler's model focuses on educational purposes, experiences, organization, and evaluation. Taba's model takes a grassroots approach involving teacher input. The Galen Saylor model focuses on goals, objectives, curriculum design, implementation, and evaluation.