Educational Psychology / Unit 12 EDP 1109 short lesson, about 20 seconds
Reliability in the Classroom
Captions available
The idea
Reliability is consistency of results across occasions, raters and tasks, and teachers raise it with more items, clear directions and clear scoring criteria.
In practice
A ten-item quiz gives a steadier picture of a student's skill than a two-item quiz on the same topic.
Where people slip
Reliability is necessary for validity but never sufficient.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Something wrong in this lesson? Flag it · Sources for Educational Psychology