The Canon of Literacy: A Three Sciences Framework

The Canon of Literacy represents a call to integrate three distinct but interconnected bodies of scientific knowledge-the science of reading/literacy, the science of learning, and the science of instruction-into a coherent, evidence-based approach to teaching children to read and write proficiently.

For decades, literacy education has been shaped by pendulum swings between competing philosophies-from whole language to phonics-first and back again. The science of reading movement has been a critical corrective, bringing renewed attention to decoding, phonemic awareness, and the alphabetic principle, while elevating comprehension, vocabulary and background knowledge. However, the science of reading is not the science of instruction, and, alone, it is not sufficient to ensure high levels of learning. Knowing what to teach is only part of the equation. Educators also need to understand how children learn and how to design instruction that supports that learning. The Canon of Literacy addresses this gap by arguing that effective literacy instruction must draw on three sciences rather than just one.

The Canon of Literacy invites educators to move beyond debates that pit one science against another. Rather than asking whether phonics or comprehension matters more, or whether explicit instruction or student-centered learning is better, the three sciences framework asks us to consider how these bodies of knowledge work together. For curriculum developers, this means designing materials that reflect not only the content of reading research but also the principles of how students learn and the practices of effective instruction. For teachers, it means developing fluency across all three sciences-understanding the reading system, understanding learners, and understanding the craft of teaching. This also means rejecting teacher shame and instead investing in professional learning that builds capacity across all three sciences, reduces stigma for struggling readers, and equips educators with the integrated knowledge they need.