Natalie Wexler cuts through the educational marketing fog to expose a critical flaw: the gap between a curriculum that claims to build knowledge and one that actually does. Her analysis of Benchmark Advance reveals that even widely adopted, highly rated programs can suffer from "faux cohesion," leaving students with fragmented facts rather than a structured understanding of the world. For busy educators and policymakers, this is not just an academic distinction; it is the difference between a student who can read words and one who can comprehend the complex realities of history, science, and civic life.
The Illusion of Cohesion
Wexler begins by dismantling the assumption that thematic grouping equals knowledge building. She highlights the work of Olivia Mullins, a science teacher and neuroscientist, who scrutinized specific units in Benchmark Advance. Wexler notes that Mullins identified a first-grade unit, "Observing the Sky," as a prime example of "faux cohesion." The texts relate loosely to the sky but fail to build on one another or reinforce key vocabulary. Wexler writes, "The brief articles all relate to the sky in some way, but they don't refer to each other or build on one another." This lack of repetition prevents the transfer of information from short-term to long-term memory, a fundamental requirement for deep learning.
The argument gains weight when Wexler connects this to the cognitive science of reading. She points out that while the texts are "decodable"—designed to match phonics patterns for early readers—they are often too simple to convey complex concepts. Wexler argues that until students are proficient readers, it is "far more efficient to build knowledge of a new topic by having teachers read aloud from texts that are more complex than those students can read on their own." This insight challenges the prevailing trend of forcing young children to decode texts that are intellectually beneath them, a practice that can stifle curiosity rather than fuel it.
"Kids who get a true knowledge-building curriculum are far more likely to acquire the knowledge that will equip them for later academic success and for assuming their responsibilities as citizens of a democratic society."
The Problem of Vague Themes
Moving to second grade, Wexler exposes the incoherence of a unit titled "Investigating the Past." The curriculum jumps from Alexander Graham Bell to the disappearance of buffaloes, a fictional diary entry, and a confusing article on Helen Keller that focuses on tadpoles. Wexler observes, "None of these articles supply any explanatory context." This fragmentation is not accidental; it reflects a design philosophy that prioritizes broad themes over specific, cumulative knowledge.
Wexler's investigation into the updated 2023 version of the curriculum reveals that little has changed. Despite marketing claims of "depth," the units remain "very thematic" with vague essential questions like "Why is the past important?" A school administrator, speaking on condition of anonymity, told Wexler that the new version was "very much the same" and "didn't go into any depth to build knowledge." This persistence of shallow content suggests that the issue is systemic, not just a matter of outdated editions.
The author also critiques the curriculum's handling of fiction versus nonfiction. In a unit on habitats, a poem depicts a mouse "roaring" at a thunderstorm. The teacher's guide offers no instruction on distinguishing poetic license from scientific fact. Wexler notes, "Nowhere is the teacher directed to explain that mice don't actually roar... or even have thumbs." This omission risks confusing young learners about the nature of evidence and reality, a critical skill for scientific literacy.
The Rating Trap
Perhaps the most frustrating aspect Wexler uncovers is why these flawed curricula receive top marks from influential reviewers. She points out that organizations like EdReports and The Reading League have given Benchmark Advance high ratings, often based on superficial alignment with standards rather than deep content coherence. Wexler writes, "That's all it takes for a curriculum to get on many state adoption lists, which guide district decisions." This creates a dangerous feedback loop where districts adopt programs that look good on paper but fail in the classroom.
In contrast, the Knowledge Matters Campaign (KMC) maintains a list of curricula that truly build knowledge, and Benchmark Advance does not appear on it. Wexler contrasts Benchmark with Amplify's CKLA, which uses a "knowledge strand map" with clearly defined topics like "American Independence" and the "Civil War" rather than vague themes. The difference is stark: one builds a foundation, while the other offers a scattered collection of facts.
Critics might note that teachers in some districts report success with Benchmark Advance, citing rising test scores. Wexler acknowledges this but cautions that these gains may be due to teacher supplementation or the use of better curricula in earlier grades, such as CKLA in K-2. She warns, "It's not clear how it would stack up against a true knowledge-building curriculum." The danger lies in mistaking incremental improvement for genuine mastery.
"If kids are learning about a topic, that's 'knowledge-building' to some people."
Bottom Line
Wexler's most compelling contribution is her insistence that "knowledge" is not a buzzword but a structural necessity for reading comprehension. The piece effectively argues that without a coherent, cumulative sequence of content, students will struggle to make sense of the world, regardless of their decoding skills. The biggest vulnerability in the current landscape is the reliance on third-party ratings that prioritize ease of use and thematic breadth over cognitive depth. Educators and leaders must look beyond the marketing and demand curricula that respect the science of how the brain learns. "