Common Assessment Meltdown

Was it me, the test, the students or can I please blame my "work husband" (the very wonderful Mr. K)?

Mr. K and I both teach 7th grade Latin at Indian Hill, and like every year, we're giving common assessments after co-planning activities, quizzes, drills, games, readings, all the same stuff. And the test was yesterday. My students took it first, on Wednesday, his took it today (a scheduling issue) and my results were dismal.

So, for 24 hours I have to wait to see if his students do better than mine (in which case it is all on me), or if it's something much more complicated. It's not often that we are caught by surprise on a test because we get a constant flow of input and give feedback daily to our students, so the fact that they did not hit the mark I was expecting (75-100% mastery), and actually fell off a cliff into a chasm (there were scores below 50%), is shocking. We started unpacking the data after school today, and will pinpoint the problem areas and reteach. But what if it's ME?

2nd period tomorrow we'll pore over the results. In the meantime, my students have received their results and completed corrections in class today, and gave me lots of feedback as we went over the questions and the answers. I have an inkling. . . but the facts will be reported tomorrow.