Document Type: Project Paper Report No.: RES38064 Document Date: AUG 22, 2019

Author: Naceva,Bojana Disclosure Status: Disclosed

Document Type: Procurement Plan Report No.: STEP23652 Document Date: AUG 21, 2019

Author: Amoi Romeo Disclosure Status: Disclosed

Document Type: Procurement Plan Report No.: STEP23607 Document Date: AUG 20, 2019

Author: Tsolo Maoeng Disclosure Status: Disclosed

Document Type: Procurement Plan Report No.: STEP23609 Document Date: AUG 20, 2019

Author: Jinyi Zhao Disclosure Status: Disclosed

Document Type: Procurement Plan Report No.: STEP23622 Document Date: AUG 20, 2019

Author: Chit Tun,Nilar Andrea Disclosure Status: Disclosed

Document Type: Project Information Document Report No.: PIDC26183 Document Date: AUG 20, 2019

Author: Arias Carballo,Diego Disclosure Status: Disclosed

Document Type: Procurement Plan Report No.: STEP23582 Document Date: AUG 19, 2019

Author: Friya Kimde Bulus Disclosure Status: Disclosed

Social scientists frequently rely on the cardinal comparability of test scores to assess achievement gaps between population subgroups and their evolution over time. ... See More + This approach has been criticized due to the ordinal nature of test scores and the sensibility of results to order-preserving transformations, which are theoretically plausible. Bond and Lang (2013) document the sensitivity of measured ability to scaling choices and develop a method to assess the robustness of changes in ability over time to scaling choices. This paper presents the scale transformation command, which expands the Bond and Lang method to more general cases and optimizes their algorithm to work with large data sets. The program assesses the robustness of an achievement gap between two subgroups to any arbitrary choice of scale by finding bounds for the original gap estimation. Additionally, the program finds scale transformations that are very likely and unlikely to benchmark against the results obtained. Finally, the program also allows the user to measure how much gap growth coefficients change when including controls in their specifications.  See Less -

Document Type: Policy Research Working Paper Report No.: WPS8986 Document Date: AUG 19, 2019

Author: Yi Chang,Andres Disclosure Status: Disclosed

Document Type: Procurement Plan Report No.: STEP23529 Document Date: AUG 19, 2019

Author: Jacob Dodoo Disclosure Status: Disclosed

Document Type: Implementation Status and Results Report Report No.: ISR37511 Document Date: AUG 18, 2019

Author: Bradley,Sean Disclosure Status: Disclosed