Orton-Gillingham vs. Sound-to-Print: What Does the Evidence Say?
Orton-Gillingham and Sound-to-Print are both structured, explicit approaches to teaching reading—but they start from opposite ends. Orton-Gillingham begins with letters and teaches the sounds and rules attached to them. Sound-to-Print begins with the sounds of spoken language and teaches how those sounds are spelled. This page compares the two fairly, and looks honestly at what the research actually shows about each—including the evidence base for Orton-Gillingham and for one of its signature features: syllable-division instruction.
What is Orton-Gillingham?
Orton-Gillingham (OG) is a structured, multisensory approach to reading instruction developed in the 1930s by neuropsychiatrist Samuel Torrey Orton (1879–1948) and educator-psychologist Anna Gillingham (1878–1963), with educator Bessie Stillman. It was created for students with what was then called "word-blindness"—now known as dyslexia—and its core instructional materials were published as The Alphabetic Method in 1936.
OG deserves real historical credit. At a time when whole-word ("look-say") methods dominated American classrooms, it was among the first approaches to teach reading through explicit, systematic instruction in the connections between letters and sounds, using multisensory techniques that engage sight, sound, and movement together. Much of what the Science of Reading now endorses—explicit, structured, sequential phonics—OG advocated for decades earlier. Any honest comparison starts by acknowledging that.
What is Sound-to-Print?
Sound-to-Print (also called Speech-to-Print or Linguistic Phonics) begins with the 40+ speech sounds a child already uses, then teaches the ways each sound is spelled. Rather than treating English as a set of letters with rules and exceptions, it treats English as a reversible sound-based code. Its foundation comes from the work of cognitive psychologist Diane McGuinness. For a full explanation, see our guide to the Sound-to-Print method.
The core difference: where instruction begins
The two approaches share more than their advocates sometimes admit—both are explicit, structured, systematic, and grounded in sound-symbol relationships. The decisive difference is the starting point.
Orton-Gillingham is fundamentally a Print-to-Sound approach: it begins with the letter on the page and teaches what sounds and rules attach to it. Because a single letter can represent many sounds, this starting point requires an expanding apparatus of rules, syllable types, and exceptions to manage the resulting ambiguity.
Sound-to-Print reverses the direction: it begins with a sound the child already knows and teaches its spellings. This keeps instruction in the direction that is actually stable—every sound has a finite set of spellings—and removes much of the need for the rule-and-exception scaffolding that print-first instruction requires.
Is Orton-Gillingham evidence-based? What the research shows
This is where the honest answer surprises people. Despite OG's century of influence and the many state laws that now mandate OG-based instruction for students with dyslexia, the rigorous outcome research supporting it is thin.
The most comprehensive analysis is a 2021 meta-analysis published in Exceptional Children (Stevens, Austin, Moore, Scammacca, Boucher, & Vaughn). Of 466 studies, only 24 met the criteria for inclusion. The finding: OG interventions did not produce a statistically significant improvement in foundational reading skills—phonological awareness, phonics, fluency, and spelling—with an effect size of 0.22 (p = .40). For vocabulary and comprehension, the effect size was 0.14 (p = .59), also not significant.
Two points of fairness matter here. First, the average effect was positive, just not statistically significant, and the authors are explicit that their findings do not prove OG is ineffective. Second, the deeper problem they identify is the quality and quantity of the research: there simply isn't enough rigorous, large-sample evidence to confirm that OG works as well as its widespread mandates assume. An earlier review (Ritchey & Goeke, 2006) reached a similar conclusion: most studies of OG are of poor methodological quality.
The honest takeaway is not "Orton-Gillingham doesn't work." It is this: the evidence base for OG is far thinner than its near-universal, sometimes legally mandated adoption would suggest. For a method treated by many as the gold standard, that gap deserves attention.
The syllabication problem
One signature feature of Orton-Gillingham deserves particular scrutiny: its reliance on syllable types and syllable-division rules. This isn’t a strawman—it’s built into OG by design. Gillingham and Stillman’s original sequence moved deliberately “from the simplest sounds in isolation, to syllables, words, phrases, and sentences,” and the teaching of the six syllable types and division patterns (the “rabbit” VC|CV and “tiger” V|CV rules) remains central to OG-style programs today.
The question is whether those rules actually work. A 2020 study in Reading Research Quarterly by Devin Kearns (University of Connecticut) tested exactly this, analyzing 14,844 words from texts used in grades 1–8. Before this study, remarkably, no analysis of the English lexicon had ever confirmed that the patterns are reliable. Kearns found:
The VC|CV (“rabbit”) pattern held only 70.6% of the time—it failed for nearly one word in three.
The V|CV (“tiger”) pattern held just 30.5% of the time—it failed roughly two out of three times.
For longer words, the V|CV pattern’s reliability fell to about 18.8%.
A rule that works less than a third of the time isn’t a rule—it’s a coin flip with extra steps. And those steps are costly: applying syllable-division rules forces a reader to stop reading for meaning, shift attention to a multi-step procedure, hold the rules in working memory, and apply a pattern that may well be wrong. As Kearns put it, “the unreliability of VCV may not justify the effort required to use the strategy.” For struggling readers—who have the least working memory to spare—this is exactly the wrong trade.
Other research points in the same direction. A 2010 study (Ukrainetz et al.) found that teaching the syllable as an intermediate step in early phonemic-awareness instruction didn’t help preschoolers and actually produced more confusion during early phoneme instruction. A 2018 study by Sargiani, Ehri, and Maluf found that teaching phoneme-level orthographic mapping prepared emergent readers better than syllable-level mapping—even in Portuguese, a language where syllables are far more salient than in English. And reading scientist David Kilpatrick has noted that most skilled readers cannot even name the six syllable types, which suggests learning them was never necessary for skilled reading in the first place.
Importantly—and fairly—none of this means students don’t need help reading long words. They do. Kearns is explicit on this point. The question is whether unreliable syllable-division rules are the right way to provide that help. The evidence suggests they are not.
Where the two approaches agree
A fair comparison resists caricature. Orton-Gillingham and Sound-to-Print agree on a great deal: both are explicit rather than incidental, both are systematic and sequential, and both reject the discredited whole-word guessing strategies of whole-language and balanced literacy, as well as the three-cueing system. Sound-to-Print is not a rejection of everything OG stands for—it shares OG's commitment to teaching the code directly. The disagreement is narrower and more specific: which direction to teach the code (sound-first, not print-first), and whether to burden students with rule systems—like syllable division—that the evidence does not support.