[cosmojg]

I can imagine a system where students are graded relative to the median performance on each exam and assignment, and if what the article is saying is true, we can expect this median to rise on its own as the semester progresses. Naturally, this would place more weight on later performance and less weight on earlier performance.

Alternatively, one could keep their existing grading system and simply use some sort of quadratic weighting scheme which continuously increases the effect of an exam or assignment on a student's final grade as the end of the semester approaches. This would be a lot easier to write down on a syllabus but might disincentivize effort spent earlier in the class.