Large class sizes plus the GPA game transforms students into grade-junkies, and teachers into mere graders. My evidence: I’ve had about 50 students ask to meet to discuss their grade this year, and how they can raise it. I’ve had three ask to meet to discuss how to write better, read poetry better, or otherwise “learn from teacher.” My take-away: they see me as a grade-giver, and school as an instrument for getting them into college, not a place to learn.
But you've got to go read the whole thing. There are extensive quotes from Thom Hartmann (who will be familiar to ADD folks) on the chap, William Farish, who came up with the system of larger classes and grading children that is so embedded in our culture today most people can't even begin to imagine education without it. There are informative links galore, especially in the comments and I guarantee you, it'll be one of those reads that just solidifies those Jello-y thoughts that previously sloshed around in your head.
If you ever have a hard day and traditional schooling is singing a siren's song in your head, go back to that post. It will rescue you.