The Impact of Professional Development on Preschool Teachers' Use of Embedded Instruction Practices is a Goal 2 research project funded by the Institute of Education Sciences of the United States Department of Education. The project is housed at the University of Florida with collaborating partners located at Vanderbilt University, the University of Washington, and the University of Wisconsin-Milwaukee. The project focuses on the development and evaluation of professional development interventions focused on embedded instruction practices. Several approaches will be compared to determine which hold the most promise for helping teachers implement embedded instruction practices with young children with disabilities.