Toward the Integration of Knowledge

"A system of feedback to the teacher and students can reveal errors in learning shortly after they occur, and if appropriate corrections are introduced as they are needed, the educational system can be a self-correcting system so that errors made at one time can be corrected before they are compounded with later errors."

Benjamin S. Bloom, Human Characteristics and School Learning, 1976.

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"Cease dependence on mass inspection. American firms typically inspect a product as it comes off the line ….  Defective parts are either thrown out or reworked.  In effect a company is paying workers to make defects and to correct them.  Quality comes not from inspection but from improvement of the process."

Point Three of W. E. Deming's Fourteen Points echoes