CANTON, Ohio -- An Ohio school board is expanding sex education following the revelation that 13 percent of one high school's female students were pregnant last year.

There were 490 female students at Timken High School in 2005, and 65 were pregnant, WEWS-TV in Cleveland reported.

The new Canton school board program promotes abstinence but also will teach students who decide to have sex how to do so responsibly, bringing the city school district's health curriculum in line with national standards.

The board made the changes in a vote at its regular meeting Monday.

The Rev. David Morgan served on a committee that developed the lesson plans. He said the new curriculum moves beyond the "Just Say No" approach.

Health textbooks, older than some students, will be replaced.

"If we had math books from 1988, reading books from 1988, as a parent, I would be furious," said Patty Rafailedes, a physical education teacher.

The Ohio Department of Education doesn't require schools to provide sex education, particularly when it comes to using contraceptives. The state curriculum calls for venereal disease education, which often is taught along with nutrition and the effects of drugs, alcohol and tobacco.

"Sex is more complex than the information about drugs and alcohol," said Bill Albert, a spokesman for the National Campaign to Prevent Teen Pregnancy. "It is not a not-now, not-ever message."

According to the Canton Health Department, statistics through July 2005 showed that 104 of the 586 babies born to Canton residents in Aultman Hospital and Mercy Medical Center had mothers between the ages of 11 and 19.