The progression of questions posed by an ACCUPLACER test is based on: A. core standards for high school seniors.
B. college freshman course material.
C. each student's previous responses.
D. common metrics and rubrics.

The  knowledge gap  as been recast more recently as a “digital divide”  gap. with the internet and social media many things can be done faster and better. so much faster and better that those that do not have access to them are literally left out of the game.