The Educational System’s Romance with Numbers: Why All the Statistics and Percentages?

In the decades-long and endless debate about grading and assessing, the conversation inevitably cycles around to the observation that evaluation systems are increasingly numerical. Current teachers, students, and parents are surprised to learn that only a few decades ago, a teacher’s gradebook might have far fewer numbers in it.

A century or two ago, a teacher’s gradebook might even have no numbers whatsoever: merely rows of letter grades.

Conversely, teachers and parents from a few decades ago would be surprised to see the massive spreadsheets which are contemporary grading programs, with grades calculated to two decimal places and weighted averaging of different categories.

How did this obsession with numbers arise?

There are multiple reasons.

One reason is a desire to be, or to at least seem, more scientific and objective. But here the appearance is stronger than the reality: while endless spreadsheets might give the perception of neutral analysis, critics have noted for decades that a great deal of subjectivity can lurk behind the outwardly sterile numbers.

A second reason is that teachers in recent decades have increasingly been placed in the position of having to defend grades. While this has always been the case to some extent, it is perhaps now more so than in the past. Spreadsheets and averages provide supporting evidence for the teacher who’s been asked to defend a grade.

An entire industry of gradebook software now exists to package the basic software engine of a spreadsheet into a larger framework of education-related terminology. A large number of online or downloadable grading programs are, at their cores, simply variations on a spreadsheet.

A great deal of time and effort is spent to create complex and sometimes confusing systems of grades, largely to generate a defensible grade in case a parent militantly objects.

Perhaps a more efficient use of the system’s work and energy would be to give a modicum of unassailability to issued grades. If grades — even if they contain the inevitable bit of subjectivity — were understood to be the educated judgment of an experienced subject matter specialist, then parents and students might not feel so free to question them.

The concepts of measurement and evaluation are used throughout civilization. Customers in a grocery store do not routinely question whether the twelve-ounce package of cheese is actually twelve ounces. Homeowners being billed for using 850 kilowatt-hours in a month don’t habitually voice doubts about the accuracy of the electric company’s measurements.

Why, then, do people feel free to question the grades which a teacher issues, causing teachers to waste countless man-hours in the generation of spreadsheets in grading software, so that such numbers are ready in reserve to defend grades?