Who said "He was the best student I ever had."?

This quote is attributed to Mazer Rackham.

He was the best student I ever had. - Mazer Rackham

"He was the best student I ever had."

Mazer Rackham Education

Character in Ender's Game

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"Half a day for sleep, and the rest for games and training."

"I know what it is to be a soldier. But these little boys?"

"He'll do what needs to be done."

"The human factor is what makes this possible."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."