​ExCELL promotes the development of preschoolers’ early language and literacy skills through four main program components:
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1. Professional development (PD) and classroom-based coaching.
Systematic, ongoing PD and coaching is provided to participating preschool educators. PD and coaching sessions focus on the latest research-based early literacy and family literacy approaches to enhance classroom and home literacy environments and teaching practices. ​​
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2. High quality instructional materials and children’s books. 
​Each ExCELL classroom receives carefully selected instructional materials through PD and/or coaching that promote early literacy and language skills for use in the classroom during large/small group instruction, teacher-led activities, and child-initiated activities.
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3. Family Literacy Events and Take-Home Family Learning Materials. 
ExCELL provides school and community based family literacy events linked to the ExCELL PD topics to establish a language-and literacy-rich home environment for every child.
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4. Evaluation.
​ExCELL implements a comprehensive, multi-level evaluation model involving formative and assumptive data collection at the classroom/teacher, parent/family, and child levels. ​