Amplify your assessment literacy. Formative, data-driven, high-stakes–we all know the buzzwords surrounding educational testing. But often times we shelve our understanding of these terms because we think they are overwhelmingly complex. After all, isn’t that why we have “experts” crafting assessments? Those who care about our schools and students–teachers, administrators, policymakers, parents, citizens–will find The ABCs of Educational Testing the first accessible explanation of how and why having a fundamental understanding of educational testing is so important. Inappropriate tests are currently leading to harmful decision-making, and this book gives you everything you need to know to change that, including • The purposes of tests • The difference between and importance of reliability and validity • How to build tests with fairness • The importance of students’ affect Using a nontechnical and conversational approach, this book offers fundamental knowledge to free you from testing fogginess–all framed around practical actions you can take today to strengthen your assessment literacy for tomorrow.

Reliability : Considering Consistency in Inconsistent Containers

Reliability: Considering Consistency in Inconsistent Containers

Some things just naturally go together. For instance, when we think of foods, such pairs of closely linked edibles that instantly come to mind include meat and potatoes, peanut butter and jelly, and, of course, green eggs and ham. Similarly, in the assessment arena, the most common pair of tag-team terms you’ll encounter are validity andreliability. In the preceding chapter, you saw that assessment validity is, by far, the most important concept in all of educational testing. Well, its close buddy, reliability, isn’t all that far behind. Let’s see why.

First off, a definition of “reliability” is surely in order. Happily, in one sense, a definition of assessment reliability is easy to identify. ...

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