Just as the Cottage Acquisition Scales for Listening, Language, and Speech (CASLLS) follow the development of listening, spoken language, speech, and cognition, the Reading CASLLS provide an integrated framework to follow children’s development of key pre-literacy and reading skills from birth through third grade. Professionals and parents can use the Reading CASLLS to assess children’s reading development, select objectives to target, and plan effective reading instruction across the areas of print concepts, alphabetic knowledge, vocabulary, fluency, and comprehension. The Reading CASLLS complement the materials professionals may already be using by providing a holistic tool to track development across all reading domains.