The odor of sweat, leftover food, and blackboard chalk filled the air.

NEWYORKER: Waiting

If you ask most people, they'd tell you there's nothing wrong with the standard classroom set-up of a blackboard and chalk, or a whiteboard and dry-erase markers.

ENGADGET

Unless bad schools are indeed closed, his scheme will be as much good as a blackboard with no chalk.

ECONOMIST: School reform

Finally, Mr. Berman stood up, took a fresh stick of chalk, climbed onto his chair, and reached above the blackboard to draw a horizontal line on the paint.

NEWYORKER: The Master