"The central approach of the class is simply to study the Bible as a foundation document of society, and that approach is altogether appropriate in a comprehensive program of secular education," it says.

Elizabeth Ridenour, a commercial real estate broker who said she formed the nonprofit organization in 1993 after deciding that she had long been "duped" into believing the Bible could not be taught in public schools, said the course has stayed within legal limits. "Our teachers are not to say, 'This is the truth,' or that the Bible is infallible," she said. "They are to say, 'This is what the Bible says; draw your own conclusions."'

But in Odessa, where the school board has not decided on a curriculum, a parent said he found the course's syllabus unacceptably sectarian. He has been waging his own campaign for additional information on where it is being taught.

"Someone is being disingenuous; I'd like to know who," said the parent, David Newman, an associate professor of English at Odessa College who has made a page-by-page analysis of the 270-page syllabus and sent e-mail messages to nearly all 1,034 school districts in Texas.

The Texas Freedom Network, which commissioned its study after the vote in Odessa, is sharp in its criticism. "As many as 52 Texas public school districts and 1,000 high schools across the country are using an aggressively marketed, blatantly sectarian Bible curriculum that interferes with the freedom of all families to pass on their own religious values to their children," it said.

In one teaching unit, students are told, "Throughout most of the last 2,000 years, the majority of men living in the Western world have accepted the statements of the Scriptures as genuine." The words are taken from the Web site of Grant R. Jeffrey Ministries' Prophecy on Line.

The national council's efforts are endorsed by the Center for Reclaiming America, Phyllis Schlafly's group the Eagle Forum, Concerned Women for America and the Family Research Council, among others.