Disclaimer: I've taught for 12 years and only heard the term speech-to-print within the last year. Since that point I've taken a deep dive and am sharing what I understand it to mean. If you're an expert in this field, please add to the conversation in the comments. I will edit the information based on you as a source or sources you provide. Thank you! TLDR: The official definition is this: "an accelerated, systematic, explicit and integrated instructional speech-first approach to reading and spelling." (see Shari Most, Project: Our Town ) Based on what I've read and seen I would say structured linguistic literacy (SLL) or speech-to-print methods are based on strong research. Background : Learning to read and learning to speak happen very differently. Researcher Philip P. Gough describes reading as " an unnatural act ." Learning to speak in a native language requires no direct instruction, reading absolutely requires explicit instruction, of var...