<p>Grade neutrality would be by determining a priori what the desired knowledge and capability should be for someone mastering the material, developing tests that have some consistency in rating people against that absolute attainment of the objectives for the course when it was created, and then giving grades based on such a rating. If one section is filled with people who all reach the mastery on an absolute level, they should all get A. If another section is filled with a majority that learn the subject poorly, then most should get C or D grades. </p>
<p>Statistically fitting the two hypothetical sections to the same curve means that section after section, semester after semester, they produce neat distributions of A - F grades, but that the learning done for a given grade varies quite a bit. </p>
<p>Further, the same absolute mastery with the same effort can be rewarded by very different outcomes - due to no fault of the student involved.</p>
<p>Intellectual sloth leads to that choice in pedagogy. Over time, it all smooths out, they might argue, but at the expense of justice or fairness to the individual students, such that the only beneficiary is the college/department/professor who over a large enough sample have consistency in the averages. </p>
<p>As another thought experiment, imagine the course is taught by two professors, one extremely tough and demanding, the other easy and unconcerned. Both produce the same distribution of grades, yet the effort by the students to earn a particular grade band is very different. </p>
<p>Grade deflation usually is asserted for a university that produces very neat bell curve distributions of grades. Grade inflation is usually tagged against a school that has a non-bell distribution with more high grades than the idealized distribution. Neither says anything about the comparability of the same GPA. A school that accepts only the most gifted and hard working students could very well have a huge excess of A grades and be justified in that result, if those students were tested to some absolute scale of required knowledge and skill. Two schools of very different selectivity and average student talent could teach the exact same course in the same way, and if they forced the distribution to a bell curve, would be assigning very different meanings to a C or an A.</p>
<p>It takes considerable effort to produce tests that are consistent and normalized. It takes considerable effort to ensure that every professor and GSI teaches to a consistent standard of difficulty and covers all the material. It takes courage to assign the blame for an underperforming section on the person teaching instead of the students. Bell curves are much easier.</p>