That's what they always were meant for -- a way of seeing how schools and school systems were doing overall. Using them for CES and the like has been done out of convenience and cost reduction. Though over a long series (multiple tests over years) there can be some indication of a student's progress, and teachers can use that as a hint for what a child might need, individual MAP scores at any one point in time aren't particularly reliable as the guiding indicator of a student's ability.
By high school, when program admission is water under the bridge and courses are more or less self-selected (allowing for pre-requisites), MAP remains as that means of evaluating school/school system performance, with great enough numbers to be statistically significant, and, perhaps, giving parents additional data points in the series, to go along with grades when considering their child's probable progress.
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