“…Evaluating the effectiveness of an itinerant approach is also based on an assumption that one can define, describe, and replicate the intervention that an itinerant teacher provides. Our own work (Dinnebeil, McInerney, & Hale, in press;Dinnebeil, McInerney, Roth, & Ramaswamy, 2001) has explored the activities of itinerant ECSE teachers providing educational support for children with disabilities who were served in community-based early childhood programs. Over 300 itinerant ECSE teachers' employed in Ohio reported that their primary activities consisted of direct services to children, (e.g., small group instruction, one-to-one instruction, taking over the classroom, etc.)…”