Under the current educational standards in Texas, adopted in 2010, slavery is listed as one of several causes of the Civil War, after sectionalism and states’ rights. But after last week’s revisions, the standards will say that elementary school students should be able to identify “the central role of the expansion of slavery in causing the Civil War and other contributing factors, including sectionalism and states’ rights.” (Middle school students will be held to similar standards, though the wording is slightly different.)

Lawrence A. Allen Jr., a Democratic member of the board, made the motion to change the language.

“I think it’s an excellent start,” he said, according to a news report from Texas Public Radio, though he added that Texans still did not agree on the subject. “And so if we can’t drive it to a consensus in our state, we’ll just let our students look at it from all points of view.”

The changes are scheduled to take effect beginning in 2019.

The effort began about a year ago, when volunteer teams of educators, academics and other community members, overseen by the state, gathered to make revisions and deletions. In September, they submitted a first draft to the State Board of Education, which comprises five Democrats and 10 Republicans.

After the board approved the draft to open it up for public comment, it quickly made national headlines because Mrs. Clinton’s and Ms. Keller’s names had been removed. Comments poured in, and not all of them from within state lines.

Marty Rowley, a Republican member of the education board, said he had not immediately noticed the deleted names when he voted to make the document public in September. Two months later, he approved the version that had restored Mrs. Clinton’s and Ms. Keller’s names.