his article aims to understand how new accountability instruments in the context of the French-speaking Belgian educational system are appropriated by schools. After having characterised the specific nature of those instruments in the context of a traditionally highly decentralised system involved in a significant process of centralisation, we identify their effects through the case study of three schools. Using a new institutionalist lens, the analyses show that these instruments refer, in the French-speaking Belgian context, to a specific demand from the political environment of schools: developing and framing a common educational landscape, rather than to a logic of teacher evaluation. The data also indicate a reaffirmation, against this specific political demand, of three traditional ways of functioning tied up to the requests made by local educational communities. Thus, the analyses show a conflict between inherited institutions highly embedded in local contexts and the political signal associated with the new accountability instruments aiming to institutionalise common norms at the system level.