The 14 high schools in the GRAND EST Region are public buildings of around 20,000 m² each, spread over different levels varying from one establishment to another. Welcoming many high school and / or college students every day, these establishments must meet new regulatory requirements in terms of accessibility for people with disabilities. So that each trip is simple and unconstrained for everyone : upgrading of sanitary facilities, stairs, elevators, fire safety, ISS (fire safety system) and creation of secure waiting areas.