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Like evolution and climate change, "grade inflation" is not "just a theory"

posted Thursday, 24-May-2007
I went to my nephew's high school graduation yesterday. He did pretty well, 42nd out of 400, so top 11%. Good job!

Something about the graduates struck me, though, and it was the fact that the valedictorian had a 6.5 GPA (on a 4.0 scale, you see). I remember when I graduated (from the same school) 21 years ago, and our valedictorian had a 5.0 GPA (on the same 4.0 scale), and a lot of us thought that was a bit ridiculous. So a 6.5, to my admittedly twenty-year-out-of-date sensibilities, seems even more ridiculous. (On the plus side, my nephew characterized the valedictorian as "ridiculously smart", said he's working on a patent (or two?), got a hundred fifty thousand dollar scholarship to ... somewhere, etc.)

In the program, they had asterisks next to names of students with 3.0 GPA or above. Over half the class has a 3.0 or above.

They also set off the first page as "honor graduates". A little less than a third of the class (123/400) was on that first page.

Maybe they're all just that smart. I hope so. 'Cause otherwise it really seems to me that having a third of the class on the honors page dilutes the significance of graduating with honors. Over half the class having over a 3.0 washes away the meaning of a 3.0. As of now (if not earlier), the only thing a "3.0 or above" means is "graduated in the top half of their class". They should really start recognizing people with a 5.5 or above, from the looks of things. And if they still say they use a 4.0 scale, well, they should stop saying that.

...

As a side note, I don't know if anyone has challenged grade inflation as "just a theory". I read a (fiction) story called "Political Science" in my recent Analog magazine, in which a Department of Homeland Security agent needles the protagonist repeatedly with the "just a theory" line: the Big Bang is "just a theory", evolution is "just a theory", global warming is "just a theory". In the story, they've just finished spending trillions of dollars on a research project that depends on the Big Bang "theory". They've outlawed all drugs based on "so-called Darwinism" (except that all of the science of biology is based on "so-called Darwinism") and then are surprised at the various plagues sweeping the country. Coastal cities worldwide have been evacuated due to rising ocean waters, and the ice caps are melting -- "just a theory ... could be a natural process". (Spoiler warning) Oh, and that research project? The protagonist is trying to stop it based on "just a theory" -- which, gosh, turns out to be true -- but he fails, and we release a gamma-ray burst with the energy of multiple supernovae that obliterates all life on Earth and (eventually) in a thousand light-year radius. Bummer.

I dunno if anyone has challenged grade inflation as "just a theory", but if they have, I'm here to tell you, it has happened. :)

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1. James E. Bennett left...
Sunday, 25-Nov-2007 7:40 pm :: http://blog.jamesericbennett.com

As a soon-to-be college graduate looking back on my high school experience, I can say that this is not only not a theory in the least, it seems to be encouraged by school policy's in some cases.

A few weeks into my senior year of high school my family moved, causing me to change schools. I went from top 10% of my class down to roughly "top" 60%. My GPA didn't budge an inch, mind. It took me the entirety of the year to figure out why this was the case, and my friendships with some of the Top 10 from that class led to the answer.

Weighted classes.

I support the /idea/ of weighted classes, but the execution varies widely and seems ripe for abuse. At my first high school, a weighted class bumped a course grade's point value by 1 on a 12.0 scale.../before/ calculation of the GPA. At the new high school, taking a weighted course bumped the student's GPA by 0.25 on a 4.0 scale.../after/ calculation of the GPA. Take four weighted classes and you get a full letter grade, free and clear.

The school then turned around and weighted what seemed like every other class. Hilarity ensued.

This is why I, personally, prefer measurements like the ACT/SAT to GPA, even if one has to take an average of SAT/ACT scores. Comparing the GPAs and SAT/ACT scores of people I knew rather well, I found the latter to be a much more accurate representation of their abilities.


2. J. Robertson left...
Monday, 26-Nov-2007 12:36 am

Not to be pedant or anything, but evolution IS a theory -- the best we have so far. That's the main difference with religious gibberish: this theory is testable and refutable , not some truth some fluffy god lands you with.

Nice post about grade inflation by the way :-)


3. Larry Clapp left...
Monday, 26-Nov-2007 8:34 am :: http://theclapp.blog-city.com/

@ J. Robertson:

Oh, I'm all about pedantry; my other domain is technicalbastard.com. :) But I'm also all about knowing your audience. Colloquially, you hear someone say "I have a theory", and most people understand them to mean "I have an idea that may or may not be true", not "I have an idea with just boatloads of evidence behind it, upon which we've based an entire science". A scientist in that situation, speaking to other scientists, might instead say "I have a hypothesis". (Or even "I have *an* hypothesis". :) Talking about the "theory" of evolution to the crowd makes as much sense as talking about the "theory" of gravity. Gravity exists. Evolution happened. We have quibbles about the specifics, but not about the grand picture.

My fortune file has this to say:

Our continuing struggle to understand how evolution happens (the "theory of evolution") does not cast our documentation of its occurrence -- the "fact of evolution" -- into doubt.

  • -- Stephen Jay Gould, "The Verdict on Creationism", The Skeptical Inquirer, Vol XII No. 2