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To use one real world example … then the number of students taking AP math more than triples in one year … and the following year about 1/2 of the extra students were not up to the pace of the AP course which was slowed down for the new students … this happened the year the HS removed themselves as a gatekeeper and any student who pushed to get into an AP was allowed to … bottom-line the weakest new students lowered the quality of the class for all the students in the class.</p>