The modular upper school will be introduced on the 1st of September 2017. The new system regards to all general and vocational upper schools which last three to five years and starts at the tenth level of education. The new system changes a lot of aspects and the people affected by the system will have to meet many challenges and demands. Therefore, this master thesis asks the question how the demands on teachers and students of business colleges in Austria will change, compared to the traditional system. First the traditional school system in Austria will be described with detailed information on business colleges. The workflow, the structures and especially the new curriculum 2014 of the business colleges will be examined in-depth. In the next chapter the new concept of the modular upper school will be outlined. This includes the new arrangements and the renovations. For a better understanding of the underlying theoretical foundations of the system, representative figures are shown in this chapter. Hence, an overview over the whole system is given. Following to this, a comparison between the traditional and the new modular system is conducted. The differences will be presented in form of an all-encompassing schedule. At the end it will be describes what kind of demands and challenges the involved people will have to meet for reaching the defined goals of the modular upper school. Therefore scenarios will be created for illustrating school processes from high performance and low performance students in business colleges. Based on this future challenges for teachers, students and other involved people will be revealed and it will be suggested what kinds of demands are required.