Olivier-Métra school is set on a plot surrounded by 1930s red brick HBM (habitations à bon marché / social housing; nowadays HLM: habitations à loyers modérés) and small houses with gardens, and dominated by recent major housing projects located on Belleville Hill. The aim of the project is to create a building that stands out of the heterogeneous architectural fabric. Seeking space and light, the school sets into the urban fabric. The free volumes, federated by the use of a sole material, pre-weathered zinc, spring out and create liaisons; the vegetation penetrates into the breach; the southern light slips into the playground punctuated by a coloured floor that continues into the classrooms; facing east, the classrooms enjoy morning sun.