Error on test spotted by Kan. student 1 year later

This from the Washington Post:

WICHITA, Kan. -- A high school student's keen eye has caught a state test error that managed to slip past teachers, test coordinators and other students for almost a year.

Geoffrey Stanford, 17, discovered during a Kansas writing test last week that an essay question concerning greenhouse gases incorrectly used the word "omission" for the word "emission," prompting the Wichita East High School junior to point out the error.

"I thought, `Surely they're not talking about leaving out carbon dioxide altogether.' It just didn't make sense," Stanford said. "It had to be a mistake."

The state Department of Education has e-mailed a corrected version of the essay question to test coordinators around the state, but the incident already has caused a lot of red faces at the department, which used a committee of more than 30 state teachers to develop the test almost two years ago...