Consultation to teachers can be an effective intervention for reducing young children's challenging behaviors within the classroom, yet there is a need for more efficient approaches that provide data-driven, video-based support to enhance and expand teacher and child impacts. This paper focuses on a newly developed early childhood consultation model, called Learning to Objectively Observe Kids (LOOK), which involves the use of data from validated measures about children, and video-based feedback, to guide teachers' selection and implementation of behavioral strategies. Results from a small randomized controlled trial demonstrate LOOK impacts on teachers' use of social-emotional teaching strategies and self-efficacy, as well as children's positive and negative engagement with teachers, peers, and learning activities in preschool classrooms. (author abstract)