BCPE uses standard psychometric statistical methodology in developing and revising the BCPE certification examination. This includes:
- Conducting an item analysis to ensure assessment validity;
- Ensuring the scored exam remains balanced by topic area of the core competencies;
- Equating different versions of the exam so that test form difficulty can be matched;
- Using a scaled, rather than a raw, score reporting system. Examples of programs that use scaled scores include the ACT® and SAT® examinations. Scaled scores are particularly useful at providing the basis for long-term, meaningful comparisons of results across different administrations of an examination.
- Choosing a scaled score of 200-500, with 350 as a pass score.
- Enable score report users to make fair comparisons of performance on different test forms;
- Avoid misinterpretation of scores between similar programs;
- Can provide candidates with appropriate comparison data;
- Provide a mathematical translation, similar to changing temperature measurements in Fahrenheit and Celsius into Kelvin;
- Do not affect whether a candidate passes or fails, only how the score is reported.