Posts Tagged: Reliability

Reliability Concerns for Classroom Formative Assessment

This week, I started teaching a course called Assessment: Theory and Practice to graduate students in the Leadership program at Saint Mary’s University. More than 70% of the students in the class are K-12 teachers. In a course like this, reliability and validity are of course big topics. In fact, next week’s class (5 hours of class time) will be spent on these two topics. So, I guess it’s the right time to return to these topics on this blog. My last blog post on this topic was on May … Read More


Reliability Concerns for Classroom Summative Assessment

As Jim Popham has so eloquently stated, “Validity and reliability are the meat and potatoes of the measurement game” (Popham, 2006, p. 100). They are what every psychometrician AND teacher need to know and understand. When psychometricians build large scale tests for state departments of education, there’s a list of validity and reliability concerns that they need to address. What about when teachers build tests for the classroom? Should they be concerned about the same validity and reliability issues? Or are the concerns different for classroom assessment? Let’s address reliability concerns … Read More



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