"There is not an outcry for, 'Teach us evolution.'"

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Sometimes, Allyn Sue Baylor doesn't teach evolution in her science class, even though the state requires it. She knows of other teachers who duck the issue, too.

They fear a backlash.

"There are cases when parents have gotten really upset," said Baylor, who teaches at Palm Harbor Middle School in Pinellas County. "It's scary. You can lose your job."............

"In short, there are too many biology teachers who won't, or don't, or can't teach evolution properly," according to an editorial in the January edition of the American Biology Teacher.

Some may be glossing over the subject because of their faith. A 1999 survey of biology teachers in Oklahoma, for example, found that 12 percent wanted to omit evolution and teach creationism instead. A similar survey in Louisiana found that 29 percent of biology teachers believed creationism should be taught, while in South Dakota, it was 39 percent.

Others may fear being dragged into a battle over belief. In a 2005 survey by the National Science Teachers Association, 31 percent of respondents said they had felt pressured by students, parents, or administrators to include creationism, intelligent design or other faith-based alternatives to evolution in their curriculum. Thirty percent said they felt pressure to de-emphasize or omit evolution.more