This is a private school with deep roots in the pedagogy of Maria Montessori and Rebeca & Mauricio Wild. The school offers students the opportunity to work, to invent, to tinker whenever they want. It has a concept which gives students a maximum of freedom of their choice what they want to learn, when, with which classmates, in which chronology. Mathias runs a dedicated makerspace there, with all kind of tools and material for crafting, making, electronics etc. He initiated the first Repair Café in a German school which takes place regularly once per month and is open to the public. With different groups of students the school periodically takes part in Maker Faires, science nights, competitions etc.