This free booklet will help you put
assessment wisdom to work.

It's yours for the asking. Just fill in the form below.
This short essay will help you share what you already know about the hazards of interpreting test results. “Do No Harm” is Jim Cox’s passionate precaution to educators about imprecision that is always present in test data. It is a layman’s lesson in the standard error of measurement, free of statistical language.

Jim is a well-known educator of educators, whose 35 years in California have enabled him to share his wisdom with educators in over 500 schools and districts. He is best known for making complex assessment riddles understandable. He is also the Owl Corps’ senior advisor.

You may order a copy of this booklet by completing the form below. You can email it to us by clicking the orange button that reads “Yes, send my booklet!” (This gives us your permission to contact you.)  (• required information)

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We look forward to hearing about your challenges and learning where you'd like to put the power of assessment wisdom to work.