The Early Learning Mentor Coach Study (ELMC) was a descriptive study of professional development grants awarded competitively to Head Start programs. The Head Start Early Learning Mentor and Coach grants were funded in September of 2010 to 131 grantees in 43 states, each with a project period of 17 months. According to the grant announcement the ELMC funds were to pay mentor coaches to provide on-the-job guidance, technical assistance and training to classroom teaching staff, home visitors and family child care providers who work in Head Start and Early Head Start programs. The overall goal of the coaches was to improve staff qualifications and training; assist grantees to promote positive, sustained outcomes for children; and promote career development in Head Start grantees. The model of mentor coaching was not prescribed, and grantees proposed approaches to fit their particular circumstances.