The purpose of this white paper is to highlight the technical work behind the version update of the Emmersion English Speaking test (EES test) from Version C.19.03 to Version D.20.09. This was a significant update in test form. Earlier forms of EES test including Version C.19.03 utilized a fixed form for Part 1 - Listen and Repeat. In this form, 30 items were presented in a set order from items that targeted ability at Novice/Beginning, Intermediate, Advanced, Superior/Mastery levels. Thus, regardless of ability each test taker would be presented with the full battery of items in a set order.