I'd like to take a moment to salute the Scantron's inventor, Michael Sokolski, who passed away recently.
Although there are still a few righteous professors out there who never learned how to create an effective test using Scantron scoring--and thus loudly declare such tests to be worthless--most 21st-century professors know how valuable a tool the Scantron is to have in one's toolbox.
Here is an interesting article about Sokolski's contribution . . . and the whole topic of this type of testing. If you want to know "why a No. 2 pencil?" or "can my pencil-sharpening technique affect my grade?" then you HAVE to read this!
Pencils Down: Scantron Inventor Michael Sokolski Has Died
by Chris Higgins
Mental Floss (online blog) - June 29, 2012 - 1:26 PM
[Entertaining blog post about the Scantron and its inventor]