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A Bible-infused curriculum that Texas approved for public schools over pushback in 2024 will undergo corrections to fix hundreds of errors caught by teachers and education officials after the material was introduced to classrooms.

The curriculum in what is known as the “Bluebonnet” textbook is among Republican-led efforts in the US to incorporate more religious teaching into classrooms. Designed by the state’s public education agency, it is optional for schools to adopt, though they receive additional funding if they do so.

Bluebonnet was approved over concerns from religious scholars that the reading lessons favored Christianity over other faith traditions and pushback from advocacy groups that the materials inappropriately prioritized preaching over teaching.