This document is a project report for the electrical installation of a school complex located in Saint Georges de l'Oyapock, France. The complex includes a high school and middle school buildings. The report provides background information on the project scope and site plan. It also describes the required work, which includes a technical study of the lighting system and electrical installation for both low and high voltage. Calculation examples are provided for determining the lighting levels, cable sizes, short circuit currents and protection device ratings. The report aims to size the electrical installation appropriately and in compliance with relevant standards and regulations.