CommonLit 360 Secondary Classrooms The Science of Reading: What It Is, What It Demands, and How CommonLit 360 Delivers It

Learn how CommonLit 360 is aligned to the Science of Reading’s best practices for teaching reading comprehension to secondary students.

What the Science of Reading Actually Is

The “science of reading” is not a program, a method, or a trend. It's a large, converging body of research—across cognitive science, linguistics, psychology, and education—about how humans learn to read and what kinds of instruction work best. An important finding for educators is the emphasis that students learn to read best from explicit and systematic instruction. Students don't absorb literacy from exposure alone. They need deliberate, well-structured instruction at every grade level.

The Simple View of Reading: Where It Starts

One of the most foundational frameworks in this research is the Simple View of Reading (Gough & Tunmer, 1986):

Reading Comprehension = Word Recognition × Language Comprehension

The multiplication symbol is intentional. If either component is weak, comprehension suffers, regardless of how strong the other is. A student who can decode every word but lacks vocabulary and background knowledge won't understand what they're reading. A student with rich language knowledge but poor decoding skills can't access the text at all.

Scarborough's Reading Rope: The Full Picture

The Simple View tells us what reading requires. Scarborough's Reading Rope (2001) shows us how it develops.

The model visualizes skilled reading as a rope made of many interwoven strands, grouped into two categories:

Word Recognition strands:

• Phonological awareness
• Decoding (phonics)
• Sight recognition

Language Comprehension strands:

• Background knowledge (facts, concepts, etc.)
• Vocabulary (breadth, precision, etc.)
• Language structures (syntax, semantics, etc.)
• Verbal reasoning (inferences, metaphor, etc.)
• Literacy knowledge (print concepts, text features, etc.)

Over time, these strands become increasingly automatic (word recognition) and strategic (language comprehension)—until they're so tightly woven together that reading can feel effortless. That's skilled reading. The Reading Rope is particularly helpful for secondary educators because it makes clear that reading instruction doesn't end once students learn to decode. The language comprehension strands—knowledge, vocabulary, reasoning, syntax—are where the real instructional work of grades 6–12 lives.

What the Science of Reading Demands of Secondary Curriculum

The science of reading is often discussed in the context of early literacy—and the foundational skills research is critical. But secondary educators are sometimes left wondering: what does this mean for us? How can we support students in middle and high school who need more support to read and understand grade-level texts? 

Here's the short answer: in grades 6–12, language comprehension is the heavy lift. Students who aren't building background knowledge, academic vocabulary, complex syntax, and verbal reasoning will struggle with the increasingly demanding texts they encounter—no matter how solid their decoding skills are.

Science-of-reading-aligned secondary curriculum should:

• Build background knowledge deliberately and cumulatively — not treat every text as a standalone event
• Teach vocabulary explicitly — both individual words and how language works across contexts
• Develop verbal reasoning — through complex texts, evidence-based questioning, and structured discussion
• Integrate writing as a tool for learning — not just as a final product
• Develop literary and genre knowledge — across text types and at increasing levels of sophistication
• Connect reading, writing, speaking, and listening — as the unified literacy system they are

How CommonLit 360 Aligns to the Science of Reading

CommonLit 360 was built around the strands of Scarborough's Reading Rope and the write to learn principles of the Writing Rope. Here's what that looks like in practice.

Background Knowledge — Built Deliberately, Text by Text

Background knowledge is a core strand of language comprehension, and for good reason: research consistently shows that what a student already knows about a topic is one of the strongest predictors of how much they'll comprehend from a new text on that topic. A student who knows something about our jury trial system will understand Twelve Angry Men differently — and more deeply — than a student who doesn't.

Every CommonLit 360 unit is organized around a topic or theme, with texts deliberately sequenced so that knowledge compounds across the unit. Students don't encounter background knowledge once and move on. They build it, text by text, across the unit — so that each new reading finds them more prepared than the last.  But sequencing alone isn't enough—CommonLit 360 also includes Related Media Explorations: multimedia lessons designed to frontload exactly the background knowledge students need before encountering the unit's central texts. 

In 11th Grade Unit 1, students read The Great Gatsby. Before they get deep into the novel, a Related Media Exploration teaches students about the Roaring Twenties—economic growth, Prohibition, and the rise of organized crime—so that they understand the world Fitzgerald's characters inhabit. A second Related Media Exploration, placed after students finish reading, provides data and deeper context on the wealth inequality and restricted rights for women that Fitzgerald critiques and prepares students for a debate and a research project on whether those critiques are still relevant today.

By the time students encounter these ideas in the text, they're not meeting them cold. That context is what makes real comprehension possible—and what makes the writing that follows substantive rather than surface-level.

Vocabulary and Language Structure — Explicit, Not Incidental

CommonLit 360 treats vocabulary and grammar as instructional priorities, not afterthoughts.

Each unit includes vocabulary lists drawn directly from the texts—words selected because they're critical for comprehension and likely to recur in other contexts. Students engage with multiple vocabulary activities designed to teach how words behave in context, how they connect to unit ideas, and how to use them accurately in original writing. In addition to explicit vocabulary instruction, each reading lesson includes footnotes defining Tier 2 and Tier 3 vocabulary, so that students have consistent support when they need it. 

Grammar and syntax receive the same deliberate treatment. In 9th Grade Unit 3: Speak Up, Speak Out: Speech and Rhetoric, students study parallel structure through a teacher-led introductory lesson followed by four practice activities. Other units address punctuation, phrases, sentence variety, and word patterns. This isn't grammar for grammar's sake—it's syntax instruction in direct service of writing clarity, tied directly to what students are reading and writing in the unit.

Verbal Reasoning — Developed Through Complexity and Discourse

Verbal reasoning—the ability to think through language, make inferences, interpret figurative meaning, and connect ideas across texts—is among the highest-order strands in Scarborough's Reading Rope. It can't be taught through worksheets alone. It develops through sustained engagement with complex texts and structured opportunities to talk and think.

CommonLit 360 builds verbal reasoning through both texts and discussions. Standards-aligned assessment questions push students beyond recall, requiring them to support their thinking with textual evidence. And every CommonLit 360 unit includes structured Discussion Lessons where students engage with key questions in small and whole-group settings, building on one another's thinking. In Research Writing Units, these discussions are especially important: they help students develop the analytical stances they'll need before they begin to write.

Writing — Daily Knowledge Work, Not a Separate Subject

Writing in CommonLit 360 is not a separate subject; it’s daily knowledge work. Students write about what they've read, using the vocabulary they've learned and the ideas they've discussed. That means that when a student sits down to write a literary analysis essay or research paper, they're drawing on a unit's worth of accumulated background knowledge, academic vocabulary, and analytical thinking. This reflects what researchers call the "write to learn" approach: writing is not only a product of learning, it's a process of consolidating and deepening it. Discussion before writing, writing after reading — that sequence is built into every CommonLit 360 unit by design.

In 10th Grade Unit 3: A Raisin in the Sun, for example, teachers can assign a range of writing tasks — short responses, literary analysis, argumentative writing, and narrative essays. Each of these tasks asks students to work with the knowledge, vocabulary, and ideas they've developed across the unit's texts. A student writing an argumentative essay about why A Raisin in the Sun should still be performed today isn't working from a blank page — they're synthesizing everything they've read, discussed, and thought about across weeks of instruction.

CommonLit 360 also provides students with opportunities to write in the same genres they've been reading. Multi-genre analysis units ask students to compare texts across genres and then produce writing in those same forms. Reading like a writer and writing like a reader: that's literacy knowledge, the final strand of Scarborough's Reading Rope, in practice.

Literary Knowledge — Sequenced Horizontally and Vertically

Students need to understand the purpose, features, and conventions of texts across genres by practicing with multiple texts repeatedly and at increasing levels of sophistication throughout secondary school. CommonLit 360 exposes students to a wide range of genres: fiction, informational texts, poetry, essays, literary criticism, and more. Text selection and sequencing are both horizontal (across a unit) and vertical (across grade levels), so that students encounter genres and forms at increasing complexity as they progress.

That vertical alignment matters. A 6th grader reading informational texts to build knowledge about changing oceans in a research unit is developing the same text analysis, research, and synthesis skills that a 10th grader will use in a more complex argumentative task. The curriculum is designed so that skills compound with each year building on what came before.

The Bottom Line

The science of reading is not a checklist. It's a framework for understanding what reading actually is and what it takes to teach it well at every grade level.

CommonLit 360 was designed with that framework at its core. Reading and writing aren't parallel tracks in this curriculum; they're the same instructional work, approached from two directions. The knowledge students build as readers makes their writing substantive. The writing they produce deepens their understanding of what they've read. The vocabulary, the syntax, the reasoning, the genre knowledge—it all moves in both directions at once. That's what science-of-reading alignment looks like in a secondary ELA curriculum. And that's what CommonLit 360 delivers.

Interested in learning more about CommonLit 360? 

One of our many goals at CommonLit is to ensure that teachers have the structure, insight, and support needed to help students read and understand grade-level texts. Our team of CommonLit 360 experts can help. Both the Core and Elevate plans support the school and district-level rollout of the CommonLit 360 curriculum with additional assessments, professional learning, and ongoing implementation support.