The Texas Education Freedom Network reported Tuesday that in 2007 only one in 25 schools used the approach known as abstinence-plus," the Houston Chronicle reported. That was up to almost 25 percent in 2010.
"That's a huge increase in a three-year period," said Kathy Miller, the fund's president. "The quiet revolution is taking place at the local level."
"Abstinence-plus" emphasizes abstinence but also teaches about preventing pregnancy and sexually transmitted diseases.
Supporters of abstinence-only programs say giving teenagers information on birth control encourages them to have sex. Recent surveys have shown a majority of Texas parents favor a broader approach to sex education.
LGBT community has 'bullied the American people': Bachmann
Ohio bar shooting arrested, charged with murder