I found out after school today that I gave the old version of a test but used the new test version's answer sheet. I found this out after I scanned them into the district test data base. At least the two tests have the same questions, just in a different order. Agh. At least my horror of seeing the highest score of 12 out of 22 can now be replaced with relief that I'm the slow learner and not my students.
Hope this helps,
Love to Teach and Teach with Passion
Remember...It's not Magic, It's Science