Satirical slop-art caricature: John Hattie of Visible Learning as a carnival-huckster with a tinfoil hat, snake oil, a phrenology bust, numerology chart, magic beans and a crystal ball — with i-Ready video game arcade machines. — Slop-Art Composite. No Rights Reserved.

PART 3

Even if you’re blissfully childless, by now you’ve likely heard of i-Ready, the infernal digital gerbil wheel that 14 million American kids are forced to run at school each and every day. i-Ready is a dreadfully designed, agonizingly repetitive standardized testing and AI-teaching platform whose rise to ubiquity has coincided with a nationwide implosion of K-12 academic achievement. Lately i-Ready’s secretive publisher Curriculum Associates has been popping up in newsfeeds over a class-action lawsuit representing a mushrooming army of pitchfork-wielding families, outraged by the harmful, unproven misery Curriculum Associates inflicts on children while harvesting their lucrative personal data. If ed-tech’s social media moment is imminent, i-Ready will likely be its Instagram.

But even if you’re among the 28 million parents of a pint-sized i-Ready coppertop, you’ve probably never heard of Professor John Hattie, the globally influential education guru famous for creating Visible Learning, a statistical analysis that purports to reveal “what works best to improve learning.” In the data-obsessed, fad-prone world of education, Hattie is the OG pedagogy influencer — a mainstay on the conference and symposium circuit, whose theory of learning has shaped national school policies around the world. Since 2023, Hattie has also moonlighted as Curriculum Associates’ “i-Ready Technical Advisor,” encircling the controversial ed-tech platform in his halo of revered academic celebrity.

John Hattie promoting i-Ready for Curriculum Associates — Professor John Hattie, i-Ready Mouthpiece

Visible Learning’s Guru of Gobbledygook

Professor Hattie is a PhD psychometrician — an arcane type of statistician who specializes in analyzing data to ensure the validity of tests. The affable, silver-haired Kiwi claims that his proprietary Visible Learning method merges and unlocks the secrets of more than 100,000 education studies covering more than 400 million students — all “on one Excel spreadsheet.”

In the world of education, John Hattie’s theories carry enormous weight with school district administrators hungry to reduce teaching into a tidy checklist of easily replicated success. Indeed, Hattie is the kind of figure that pedantic bloviators who put “thought leader” on their LinkedIn profiles name-drop to signal sophistication. (“What, you don’t know John Hattie?!”) And when they do, it sends less confident peers scrambling to Google the guru’s mantras, so they too can play the same performative careerist game.

But despite Visible Learning’s popularity among starstruck education functionaries as the “Holy Grail” of learning, Hattie has long been the subject of blistering criticism from more discerning statisticians, researchers, and educators, who call Visible Learning “pseudoscience,” “a house of cards,” and Hattie “a hack fraud.”

“To believe Hattie is to have a blind spot in one’s critical thinking when assessing scientific rigor. To promote his work is to unfortunately fall into the promotion of pseudoscience. Finally, to persist in defending Hattie after becoming aware of the serious critique of his methodology constitutes willful blindness.”

— Bergeron & Rivard, McGill Journal of Education (2017)

“If Hattie’s research had come to our academic science group it would have been laughed out of town. His wasn’t an argument weakness; it was a black hole. Hattie’s research is a battered, articulated truckload of rubbish being presented as a caravan of giant gold and silver carriages transformed from pumpkins.”

— Kelvin Smyth, New Zealand Department of Education (2018)

“Visible Learning is a dubious mishmash of research of unknown quality, statistical juggling, and the author’s self-assured opinion… a product that exists in the marketized world of educational gurus and magic bullet fads.”

— Johnson & Janzen, University of Manitoba (2023)

Even Hattie himself sometimes accidentally cops to the superficiality of his theoretical number-crunching. In a 2025 interview on the New Zealand podcast “Talking Teachers,” Hattie revealed that actually “going into classrooms” requires prohibitive amounts of “involvement and time,” and as such “that’s the bit that’s missing from the Visible Learning.” That’s right: Professor John Hattie, the world-renowned teaching strategy expert, eschews entering classrooms. He merely issues data-based pronouncements — like the Great and Powerful Oz pulling levers while draped in academic regalia.

Hattie has long been the subject of blistering criticism from more academically rigorous statisticians, researchers, and educators, who call Visible Learning “pseudoscience,” “a house of cards,” and Hattie “a hack fraud.”

Criticism of Hattie arises largely from the fact that Visible Learning isn’t actual research; it’s a mere data “framework” built atop a hotly-debated statistical gimmick called “meta-meta-analysis” — or in layman’s terms: a study of studies of studies. If that sets off your internal B.S. alarm, it’s not because you’re an unsophisticated rube; it’s because all sensible people (whatever their profession) realize that once any discussion gets three layers deep into abstract theoretical analysis, things invariably devolve into pseudo-intellectual blather with no practical applications whatsoever.

The Quackery of Visible Learning

To understand John Hattie’s Visible Learning “meta-meta-analyses,” imagine digitizing 100,000 cookbooks reflecting the spectacular diversity of global culinary history, then having a computer reduce them into a thin pamphlet called “Human Meals That Work.” Sure, it may be a mathematical average, but when you cook the recipes therein, you get a putrid slurry that is neither appetizing, nutritious, nor remotely indicative of the art of cuisine.

In an educational context, this means Hattie will take, say, a small lab experiment on undergrads learning advanced abstract algebra, and a large classroom study of kindergartners doodling with crayons, and stir them together into his trademarked magical crockpot of statistical gruel. Multiplied by 50,000. He then serves up steaming bowls of the hopelessly jumbled data in a buffet of jargonistic buzzwords and tautologies that ring nakedly silly to the unconverted. This prompts many reputable scholars to denounce “The Cult of Hattie” as so much irredeemably flawed hucksterism.

Nevertheless, in the 20 years since Visible Learning debuted, it’s been used as the pedagogical foundation for massive international shifts toward the high-stakes standardized testing that is the entire raison d’être of i-Ready and other ed-tech products. (Hattie’s infamous “class size doesn’t matter” findings have also been widely used to justify decreased teacher hiring and bloated classroom head counts.)

To understand John Hattie’s Visible Learning “meta-meta-analyses,” imagine digitizing 100,000 cookbooks reflecting the spectacular diversity of global culinary history, then having a computer reduce them into a thin pamphlet called “Human Meals That Work.”

How is this all possible? Because Visible Learning is a classic case of how simplistic, easy-to-digest metaphors can capture the imagination of entire industries. Think “The Tipping Point” in marketing or “Broken Windows” in policing. Of course, it’s also a reflection of the structural incentives that propel industries to mint their own celebrities: charismatic Tony Robbins types with a buzzy book to hawk who can fill conference auditorium seats and dazzle aspirational young professionals with keynote speeches packed with buzzwords, statistics, and endearing folksy anecdotes.

The i-Ready Hattie-Corwin Partnership

While Hattie’s theories and methods have long been controversial across the education community, in 2023 Curriculum Associates announced a sweeping partnership with Hattie and Corwin, the California publisher that licenses and commercializes Visible Learning into a multi-million dollar global consulting and professional development concern. In a press release, Curriculum Associates CEO Kelly Sia enthused, “Professor Hattie’s Visible Learning research and our i-Ready Assessment program are a natural complement to one another.” As part of the B2B deal, terms of which are confidential, Hattie was also appointed “i-Ready Technical Advisor”— a role whose actual technical elements aren’t apparent, but evidently includes providing a host of promotional services, including platitudinous blog content, social media videos, and presenting at Curriculum Associates events.

For Curriculum Associates, long unable to point to even a single peer-reviewed study showing i-Ready is even remotely effective, Visible Learning feels like a “natural complement” because it grants the pedagogical equivalent of a participation trophy. In his 2024 analysis “The EdTech Revolution Has Failed,” neuroscientist Dr. Jared Cooney Horvath noted of Visible Learning: “What [Hattie] found was equal parts surprising and predictable: nearly everything has a positive impact on student learning.” This awards a kind of rubber-stamp of approval, buttressed by Visible Learning’s claims to distill the outcomes of 400 million students, which effectively drapes i-Ready in the Emperor’s New Lab Coat, and creates perfect optics for dazzling the school district procurement officials who sign multi-million dollar curricula licensing deals. (More recently, Horvath himself has also concluded i-Ready has “zero meaningful evidence” of efficacy.)

Hattie will take, say, a small lab experiment on undergrads learning advanced abstract algebra, and a large classroom study of kindergartners doodling with crayons, and stir them together into his trademarked magical crockpot of statistical gruel. Multiplied by 50,000.

Peddling i-Ready Video Games as “Engagement”

In a cultural moment when ed-tech faces a furious popular backlash, the subject of “engagement” is an especially touchy one for Curriculum Associates. Why? Because in traditional analog “ed,” engagement means healthy student enthusiasm and classroom participation. In “tech” however, the term is synonymous with “sticky” — digital product development lingo for experiences that use unethical “persuasive design” dopamine hit loops to activate users’ inner Pavlovian dogs. (Facebook’s “Like” button and YouTube’s eternal auto-play are notorious examples.) CA plays a devious semantic game by pretending to reference the former analog meaning, when in fact all the student achievement metrics generated by i-Ready depend entirely on the latter’s dopamine loop traps.

In recent months, CA has dispatched Hattie in his i-Ready Technical Advisor capacity to proactively strengthen their “engagement” narrative. Writing about “Deepening Student Engagement” for the i-Ready blog, Hattie hewed responsibly to camouflaging word salad, declaring, “Engagement is built on clarity, agency, relevance, purposeful pacing, and challenge.” But in an otherwise substance-free i-Ready engagement webinar, Hattie said the quiet part out loud — explicitly invoking the video games Angry Birds and Fortnight as engagement models for i-Ready.

When I asked Hattie during the Q&A whether student classroom engagement should be conflated with Silicon Valley’s “engagement” metric that is widely understood to mean addiction, Hattie doubled down with glib humor, chuckling, “Come on guys—the biggest addiction I want to have in a middle school is learning… so no, I’m the opposite — I say bring it on!”

But Denise Champney, a Rhode Island language speech pathologist and 25-year public school teaching veteran who actually enters classrooms, has found i-Ready to be anathema to true student engagement. “They’re actually not listening. They’re just clicking,” she told me. “It’s dopamine hits. It’s not real learning. Real learning happens between people and humans—in your real, physical world. Until you sit next to a child using [i-Ready] and you see how horrible it is, I don’t think people really get it.”

A Fellowship of Frauds

That John Hattie and i-Ready should crawl into symbiotic bed together is unsurprising; transactional marriages between self-deluding celebrities and corporations peddling noxious poison is a tale as old as Ronald Reagan and Chesterfield cigarettes. But it is disappointing — and neatly personifies what The Argument calls the “weak and sloppy” state of education research.

We presume that academia’s gatekeepers, flush with credentials and inscrutable degree-signaling letters following their names, exercise sufficient intellectual rigor to be immune to the get-smart-quick schemes of smooth-talking hucksters bearing bags of magic i-Beans. Unfortunately, the education community has long demonstrated a pronounced susceptibility to unproven fads like Visible Learning — fueled by a “publish or perish” culture that concocts a steady stream of ever-more-outlandish theories and practices to reinvent the wheel that is teaching 2+2=4. And it’s this very same weakness upon which Curriculum Associates now preys to peddle its worthless wares, which are invariably adopted in the context of so-called educational “reform.”

The past decade’s implosion of American academic achievement has directly paralleled the mass adoption of i-Ready and other e-learning products. Ed-tech profiteers routinely dismiss this with a hackneyed “correlation does not causation make” argument that goes a little something like this:

“Just because I started forcing your previously skinny kid to eat a dozen chocolate-frosted donuts every day, that doesn’t *prove* the donuts caused their sudden morbid obesity! We can’t *possibly* demonize donuts until we’ve conducted years-longs studies in which we force millions of other kids to gorge themselves sick on the same donuts every day and measure the impact! (And oh by the way I just happen to own a donut factory...)”

They point to cherry-picked data points from seemingly authoritative nonsense like Visible Learning to insist we mustn’t make any hasty decisions based merely on the evidence we see with our own eyes. They insist years more research are required, during which their revenue-generating status quo is preserved, and millions more kids are sacrificed at the cognitive altar of ed-tech. Alas, this is the point at which the academic analytic mindset becomes an ouroboros of asininity — a simultaneous black hole of common sense and supernova of pseudoscientific gaslighting.

And it’s in this universe, where edu-celebrity quacks like John Hattie beam aboard the USS i-Ready, that kids get a warp-speed one-way ticket to Visible Stupidity.

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POSTSCRIPT: Neither Curriculum Associates nor Professor John Hattie responded to requests for comment and clarification on scholarly criticisms of Visible Learning, Hattie’s endorsement of video game addiction methodologies in his position as i-Ready Technical Advisor, the financial terms of their contract, or how the parties manage the potential conflict of interest between Hattie’s roles as academic researcher and commercial product evangelist. (Instead, Curriculum Associates began purchasing Google ads on searches of “John Allen Wooden” in an effort to draw readers away from this series.)

POST-POSTSCRIPT: A very special welcome to my latest subscriber from FGS Global in Washington DC, which “specializes in corporate reputation… public affairs, and crisis management for high-stakes scenarios.” Ahem!

ALL THE WORLD LOVES A WHISTLEBLOWER! Are you a current or former Curriculum Associates employee, consultant, partner or vendor? If you have information regarding the development of i-Ready and its impact on children that you would like to share, please contact me. Your identity will be kept confidential.

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Howdy. I’m a tech-traitorous writer, satirist, creative director, and dad based in Los Angeles. Having done hard time in big online media, late night TV, ad agencies, politics, and parenting, I created Epostasy as my little lab for gleefully dismembering all those self-important things. Check out my tech-skeptical kids book series, Screen Time Tales, along with other projects at johnallenwooden.com

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