Today is:  March 29, 2020
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::March 27, 2020
Scores for the March 2020 CPDO® examination have been posted online.
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::March 27, 2020
Scores for the February 2020 Part III CSE® and ISE® examinations have been posted online.
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::March 6, 2020
Scores for the January 2020 Part III CSE and ISE examinations have been posted online.
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::February 7, 2020
Scores for the December 2019 Part III CSE and ISE examinations have been posted online.
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::January 24, 2020
Scores for the December 2019 Part II PAM® and TMOD® examinations have been posted online.
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::January 10, 2020
Scores for the November 2019 Part III CSE and ISE examinations have been posted online.
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::December 6, 2019
Scores for the October 2019 Part III CSE and ISE examinations have been posted online.
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::November 8, 2019
Scores for the September 2019 Part III CSE and ISE examinations have been posted online.
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Criterion-Referenced Testing Licensure exams, such as the ones administered by the National Board of Examiners in Optometry, are criterion-referenced tests. A criterion-referenced test bases a candidate’s score solely on her or his knowledge of the content, without reference to other candidates. In contrast to this, norm-referenced tests provide percentile rankings of test-takers, meaning that one person’s score is in reference to the rest of the test-takers. Some examples of norm-referenced tests include the SAT and intelligence tests. Norm-referenced tests provide percentile rankings to convey a candidate’s score relative to other candidates and are appropriate in certain contexts such as school admission decisions. However, criterion-referenced tests compare candidates’ performance to an absolute standard, and not to the performance of others. Criterion-reference tests are more appropriate for licensure because there is no limit to the number of candidates who can pass or fail. Every candidate’s performance is judged independently against the absolute standard, regardless of when the test was taken.

Performance on criterion-referenced test is judged against a pre-determined standard of performance, and therefore, is scored the same regardless of when or where the exam is completed. Norm-referenced exams utilize a normal curve in setting percentile rankings. Criterion-referenced exams do not utilize a normal curve in scoring.

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