Answer:

eraser

Answer	Crossword Clue
ERASER	Need for teachers across the board
ERASER	Opposite of the point?
ERASER	It usually leaves crumbs

ERASER	Rubber
ERASER	Occasional aid in crossword solving
ERASER	Means of getting the word out?
ERASER	Tip for remedying mistakes?
ERASER	Tip for slips
ERASER	Thing taken to a slip
ERASER	One end of a pencil
ERASER	It may contain traces of lead

ERASER	Golf pencil's lack
ERASER	It gets the lead out
ERASER	Draftsman's need
ERASER	Lead's counterpart
ERASER	It may be felt by a blackboard
ERASER	Blackboard accessory
ERASER	One way to take back one's words?
ERASER	Slip hider

ERASER	Stationer's item
ERASER	Clearing aid
ERASER	Whiteboard cleaner
ERASER	Blackboard appurtenance
ERASER	Opposite end of the point
ERASER	Chalk remover
ERASER	Pink tip
ERASER	Mistake remover

ERASER	Alternative to crossing out
ERASER	Desk item
ERASER	It may help when changing your mind
ERASER	Chalkboard accessory
ERASER	Counterpart of a delete key
ERASER	Point's opposite?
ERASER	Pencil's end
ERASER	Desk drawer item

ERASER	Pencil topper
ERASER	Nonpointed end
ERASER	The less-used end
ERASER	Script scraper
ERASER	Summer 1996 movie thriller