This document provides information about the Sint-Donatus instituut Merchtem secondary school in Flanders, Belgium. It discusses the school's Erasmus+ projects focused on science, technology, engineering and math (STEM). The school has participated in multiple Erasmus+ projects since 2015 on topics like the impact of science and technology, and innovative STEM teaching practices. The projects have involved partnerships with schools in Sweden, France, Germany, Estonia, Spain, Italy and other countries.