Why are TOEIC raw-score-to-scaled-score conversion tables not disclosed to the public?
Statistical analysis is conducted after each Public Testing administration (also known as a Secure Program administration), and a unique raw-score-to-scaled-score conversion table is created for each test form based on statistical equating results. Scaled scores that are comparable across different test forms are then reported back to the test takers. The TOEIC scaled score range is from 5 to 495 for the listening and reading tests, respectively. As each test form will be reused multiple times in different areas of the world, the TOEIC program has a policy not to release test forms, for security reasons. Since test forms are not released to the public, the conversion table that is unique to each test form is not released either. A conversion table, used for reporting scaled scores, is of no practical use to the public when the test form to which it applies is not disclosed. In fact, the conversion table may fall subject to misuse if it is applied to the wrong test form and results in i
