Calibration means that once we have created our questions, we test them with volunteer test takers. At the end of the test, we place each volunteer on the Global Scale of English.
Calibrating our test means that we are able to assign a highly accurate value to each individual question, and, depending on a test taker's response, we can place them on the Global Scale of English.
Pearson English Placement was calibrated with over 13,000 volunteers from 96 countries, including Saudi Arabia, Poland, Panama, Ecuador, The Netherlands, Argentina, Brazil, Spain, Guatemala, Japan and Thailand. Each response was reviewed and calibrated to ensure the highest levels of accuracy.