It is Friday night, and I am sitting at my computer, listening to the first concert of Pearl Jam’s new tour, featuring the first live performances of half a dozen tracks from Dark Matter, and interpreting data from charts and spreadsheets.

In other words, this is very close to the perfect evening, and at 47 I may as well accept what I am because it’s not changing.

I am a rock star, ladies and gentlemen. We took the final NWEA of the year on Wednesday and Thursday, and … goddamn. I was elated by last year’s scores. I am fucking ecstatic with these. I have never seen results as good as what I got on this year’s spring NWEA before. And the really awesome thing is that I could go a dozen different ways after that sentence and they’d all be just as awesome.

Let’s back up a bit. The NWEA is administered three times a year and eats up a grand total of about twelve hours of instructional time over the course of the school year. It is primarily a growth test, with no concept of success or failure– the scores are indexed against grade levels, but you can’t fail the NWEA; you only show high achievement or low achievement compared to your grade cohort and high growth or low growth compared to other people in the score band of your grade cohort.

This is the kind of test I want. I get kids all over the map– kids taking a class two years above grade level and kids with 60 or 70 IQs. I don’t care whether or not my kids are successful against some arbitrarily designated cut score that can be manipulated depending on whether the politicians think we’re passing enough kids or not. I want to know whether they got better at math under my instruction. And the NWEA provides me with that data.

And it also provides me with something I really like– the ability to compare my own kids’ performance in Math against their performance in Reading, which I don’t teach, which is as close as I can get to an unbiased check on whether I’m doing my job right. Two years in a row now my kids’ Math growth has kicked the shit out of their Reading growth. It was rough last year; it was staggering this year. Which brings me to that chart up there. That’s my second hour. The pluses are their Math scores and the squares are their Reading scores, so each kid is represented twice on the graph. The farther to the right their boxes are, the better they performed, and the higher they are, the more their growth was. In other words, you want them in the green box and maybe not so much in the red box. Orange and yellow are on-one-hand-on-the-other-hand territory.

Here, let me clear the Reading scores out:

Now, this particular chart shows the two things I want to highlight more clearly than the rest of my classes, but believe me, these are common threads across all of my students. First, look at how many of them are high growth. I have four fucking kids at the 99th percentile in growth– in other words, kids who showed more growth than 99/100 of kids who took this test, nationwide. I have eleven across the 117 kids I have scores for. There were nine of them at the 90th percentile or above, just in that class. There were 26 across all of my classes– in other words, 22% of all of my students were in the top ten percent in growth in America.

I want a fucking raise.

The other thing I want you to notice is that yellow box, the one for kids who are high achievement but low growth. Notice that that fucker is empty.

If we look at my low-achievement kids, 44 of them were high growth and 44 were low growth. Which sounds exactly like you might expect, but “what box are they in” is kind of a blunt instrument. Almost 2/3 of my high achievement kids– 19 of 29– were also high growth. And the high-achievement kids are widely considered to be much more difficult to get to show growth.

This is interesting to me in terms of what it says about me as a teacher. I did a good job with my low-achievement kids. I want to dig into those numbers more and look at averages and medians to get a little more detail, but I’m still pretty damn happy with a 44/44 split. But I did a fantastic job with my high achievers. I am doing a mathematically demonstrably better job achieving growth with my high-achieving kids than with my low-achieving kids. Which, believe me, I’m going to make a point of when I campaign to get a Geometry class and maybe the other Algebra class back next year. I would love to see numbers from the guy who teaches the Geometry class at the only middle school in the district where it’s actually taught. If he’s beating the numbers I put up this year, I need to be sitting in on his class.

God, I love being a numbers nerd, and God, I love it when I get a chance to brag about my kids.