Vive La Variance!

To educate is to change. Instruction and learning are about change. Educational measurement is defined by variance. Literally. The fundamental concepts in the field are expressed in terms of variance. One of the first techniques that we learn as eager young graduate students is analysis of variance. Without variance, our lives as psychometricians, much likeContinue reading “Vive La Variance!”

Adrift at “C” with IRT

For the past three decades we have weathered the storm of test-based accountability in a skiff called IRT. Buttressed only with a few psychometric tools, loosely defined unidimensional latent constructs, and the promise of measurement invariance we have been buffeted by wind and waves, sometimes taking on water, sometimes finding ourselves run aground in shallowContinue reading “Adrift at “C” with IRT”

Render Unto Caesar What Is Caesar’s

How do you innovate in large-scale state testing while continuing to meet federal assessment and accountability requirements? That, essentially, was the question addressed by the Center for Assessment team and state leaders in the final session of the Center’s virtual Reidy Interactive Lecture Series (RILS). Specifically, the session featured interviews with leaders in states currentlyContinue reading “Render Unto Caesar What Is Caesar’s”

On a Whim and a Prayer

You win a multi-year contract for a new, innovative state assessment program.  You spend the next six months staffing up, getting the project infrastructure in place, and working with the state to begin the initial design and development process.  A new governor takes office and the assessment program and your contract are canceled immediately. MuchContinue reading “On a Whim and a Prayer”

Ed Reform – The Song That Doesn’t End

This is the song that doesn’t end Yes, it goes on and on my friend. Some people started singing it Not knowing what it was. And they’ll continue singing it forever just because [repeat ad infinitum] Well, folks weren’t too receptive of my attempt to invoke Friedrich Nietzsche in a recent post on Education ReformContinue reading “Ed Reform – The Song That Doesn’t End”