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But talk to teachers and many will tell you they learned something different about how children learn to read in their teacher preparation programs. Jennifer Rigney-Carroll, who completed a master’s degree in special education in 2016, told me she was taught that children “read naturally if they have access to books.” Jessica Root, an intervention specialist in Ohio, said she learned “you want to get” children “excited about what they’re reading, find books that they’re interested in, and just read, read, read.” Kathy Bast, an elementary school principal in Pennsylvania, learned the same thing. “It was just: Put literature in front of the kids, teach the story, and the children will learn how to read through exposure,” she said.

These ideas are rooted in beliefs about reading that were once commonly called “whole language” and that gained a lot of traction in the 1980s. Whole-language proponents dismissed the need for phonics. Reading is “the most natural activity in the world,” Frank Smith, one of the intellectual leaders of the whole-language movement, wrote. It “is only through reading that children learn to read. Trying to teach children to read by teaching them the sounds of letters is literally a meaningless activity.”

These ideas had been debunked by the early 2000s. It may seem as if kids are learning to read when they’re exposed to books, and some kids do pick up sound-letter correspondences quickly and easily. But the science shows clearly that to become a good reader, you must learn to decode words. Many whole-language proponents added some phonics to their approach and rebranded it “balanced literacy.”

But they did not give up their core belief that learning to read is a natural process that occurs when parents and teachers expose children to good books. So, while you’re likely to find some phonics lessons in a balanced-literacy classroom, you’re also likely to find a lot of other practices rooted in the idea that children learn to read by reading rather than by direct instruction in the relationship between sounds and letters. For example, teachers will give young children books that contain words with letter patterns the children haven’t yet been taught. You’ll see alphabetical “word walls” that rest on the idea that learning to read is a visual memory process rather than a process of understanding how letters represent sounds. You’ll hear teachers telling kids to guess at words they don’t know based on context and pictures rather than systematically teaching children how to decode.

Many teachers learn these approaches in their teacher preparation programs. Publishers perpetuate these ideas, and school districts buy in. But colleges of education — which should be at the forefront of pushing the best research — have largely ignored the scientific evidence on reading.