A study conducted by a Texas university professor found that at least a third of classes on the Bible in the state's public school system aren't meeting legal requirements to eliminate bias, reported the Associated Press.

The study's author, Mark Chancey, a religious studies professor at Southern Methodist University, said that many classes endorsed conservative Protestant beliefs on the religious text, offered a "problematic treatment of Judaism" and used "pseudo-scholarship."

He conducted the study for the progressive Texas Freedom Network.

In 2007, the state legislature passed a law outlining the standards to which the classes should adhere but offered no funding to train teachers regarding those standards.

During the last school year, 57 school districts and three charter schools offered such classes, and Chancey's study found that the "most problematic courses" came from 20 of those.

Some districts apparently use texts created for Sunday schools and portrayed the Bible as straightforward history, which Chancey told the AP was not appropriate for public schools.

One high school relied on Hanna-Barbera's "The Greatest Adventure: Stories from the Bible" cartoons, in which three characters travel back in time to witness Biblical events.

[Image: Bible With Man's Hand on Shutterstock]