In 2018 the OECD published the findings of its PISA for Development (PISA-D) pilot project which was undertaken to make the regular PISA framework more accessible and relevant to low- and middle-income nations. This would encourage such nations to join PISA as part of the OECD's Learning Framework 2030 and provide them with `contextualised' policy recommendations. In 2019 the OECD declared the project a success. We analyse and compare the PISA-D reports as well as its portrayal as a success. We suggest that, whilst PISA-D clearly made technical adjustments relating to the longstanding challenges which face low-income nations engaging in comparative assessments it replicates rather than addresses those challenges. Drawing on literature on organisational legitimacy and the politics of expertise, we interpret the PISA-D pilot as a political strategy primarily deployed to legitimate and extend rather than evaluate the project.