Why Dyslexia’s Biggest Advocates Are Fighting the Senate Dyslexia Bill

A bipartisan bill, a fast-track push, and a coalition saying slow down

The 21st Century Dyslexia Act (S. 3010) was reintroduced in mid-October 2025 by Republican Senator Bill Cassidy of Louisiana and Democratic Senator John Hickenlooper of Colorado. It would move dyslexia out of the Specific Learning Disability category and make it its own eligibility category under the Individuals with Disabilities Education Act, using the definition Congress adopted in the First Step Act of 2018, and it adds a section requiring equal access to accommodations and services, naming students from low-income families and students still learning English. “Despite dyslexia impacting one in five Americans, students are rarely tested,” Cassidy said when the bill was introduced. Hickenlooper put the goal this way: “Better early screening, more awareness, and modern tools will help make sure kids with dyslexia are diagnosed early.”

On July 29, a coalition of disability and education organizations, including the Autism Society of America, the Council for Exceptional Children, the International Dyslexia Association, the Learning Disabilities Association of America, the National Association of School Psychologists, and the National Center for Learning Disabilities, urged the Senate education committee to reject the bill, writing that it “defines dyslexia in a manner that is inconsistent with current scientific understanding” and “will create confusion for States and school districts by disrupting existing approaches.” The committee advanced it anyway in late July. On August 7, with a fast-track vote in play, NCLD urged senators to “oppose any effort to pass the 21st Century Dyslexia Act by unanimous consent” and asked Congress to “slow down, listen to students, families, educators, researchers, and disability advocates.”

A category is not a service, and a definition is not a detail

Start with the sentence at the center of the dispute. The bill defines dyslexia as “an unexpected difficulty in reading for an individual who has the intelligence to be a much better reader.” That wording ties identification to the gap between a child’s IQ and their reading, an approach with a long record and a bad one. When the International Dyslexia Association revised its definition in October 2025, its first revision since 2002, it removed discrepancy language entirely; the researchers who led the revision (Catts, Haynes and Joshi, 2026, in Annals of Dyslexia) explain that approaches relying on a gap between intellectual ability and reading “lack predictive validity,” citing Stuebing et al. (2015). In plain terms, measuring the gap between IQ and reading does not reliably find the children who need help, and waiting for a gap to grow wide enough to measure is how “wait to fail” got its name. We examined the bill’s definition in detail in our June coverage.

The field’s current definition describes causes of dyslexia that “are complex and involve combinations of genetic, neurobiological, and environmental influences that interact throughout development,” and states that underlying phonological and morphological difficulties are “common but not universal.” Reading draws on several systems at once, which is why two children who earn the same label often need different help. A statute that hard-codes one 2018 definition does not update the way science does. The coalition’s practical warning lands here too: its letter notes that 20 states already have policies that discourage or reject the identification approaches the bill would encourage, so a new federal category built on them would collide with what those states have spent a decade building.

And here is the part that matters most for a parent: a category is not a service. Under IDEA, the supports a child receives are supposed to follow the child’s documented needs, not the name of the eligibility box. The coalition’s alternative asks Congress to fund what changes outcomes: “Universal screening for reading difficulties, paired with evidence-based instruction and early intervention, offers a more effective path.” The field’s definition points the same direction, stating that “language and literacy support before and during the early years of education is particularly effective.”

What this means for your child, whatever the Senate does

Both sides of this fight hold a truth. The senators are right that children who struggle with reading go unidentified, and that many families first hear the word dyslexia from a tutor rather than from their school. The Specific Learning Disability category is IDEA’s largest, covering 2.4 million students ages 5 to 21 in fall 2023, and the International Dyslexia Association reports that about 85 percent of students classified with a learning disability have their primary difficulty in reading and language processing. The coalition is right that how a law finds those children decides whether help arrives in kindergarten or in fourth grade, after years of struggle have already taught a child a story about themselves.

Three things you are able to do now, in any state. First, do not wait for Washington before acting on signs of a reading struggle; early support is the one thing every party to this dispute agrees on. Second, know your existing rights: in the United States, federal law already lists dyslexia within the Specific Learning Disability category, and a parent has the right to request a school evaluation, at no cost to the family, by writing to the district. Third, at any IEP meeting, keep the conversation on needs and instruction rather than category names: ask what the school will teach, how often, with what method, and how progress will be measured. A label opens a door. Instruction is what walks through it.

Watch what happens next. If the fast-track push fails, the bill goes through regular order, which means hearings, testimony, and amendments, exactly the process the coalition is asking for. If the definition is updated along the way, this bill could still end up doing what its sponsors intend. The disagreement is not over the destination. It is over whether the law should carry the field’s current map or a retired one.