American devolution

Monday morning, Room 207: First day of a unit on the origins of life. Veteran biology teacher Al Frisby switches on the overhead projector and braces himself.

As his students rummage for their notebooks, Frisby introduces his central theme: Every creature on Earth has been shaped by random mutation and natural selection — in a word, by evolution. The challenges begin at once.

"Isn't it true that mutations only make an animal weaker?" sophomore Chris Willett demands. " 'Cause I was watching one time on CNN and they mutated monkeys to see if they could get one to become human and they couldn't."

Frisby tries to explain that evolution takes millions of years, but Willett isn't listening. "I feel a tail growing!" he calls to his friends, drawing laughter...

Two decades of political and legal maneuvering on evolution has spilled over into public schools, and biology teachers are struggling to respond. Loyal to the accounts they've learned in church, students are taking it upon themselves to wedge creationism into the classroom, sometimes with snide comments but also with sophisticated questions — and a fervent faith.

As sophomore Daniel Read put it: "I'm going to say as much about God as I can in school, even if the teachers can't."

Such challenges have become so disruptive that some teachers dread the annual unit on evolution — or skip it altogether.