Corrected: This story originally gave an incorrect first name for the spokeswoman for the Pennsylvania Department of Education. She is Beth Gaydos. Could a computer really be a good judge of student ...

Imagine a school where every child gets instant, personalized writing help for a fraction of the cost of hiring a human teacher — and where a computer, not a person, grades a student's essays. It's ...

A: They're cheap to score. B: They can be scored quickly. C: They score without human bias. D: All of the above. It would take a computer about a nano-second to mark "D" as the correct answer. That's ...