The introduction of all-day schooling was one of the political consequences arising from Germany’s poor performance in the PISA study. One of the key ideas here was to boost cooperation between all-day schools and partners offering extra-curricular activities. To this end, the concept of the Culture School was developed. These are schools devoted not only to academic subjects, but also to cultural and artistic pursuits. Special tools and methods have been devised to help schools develop in the direction of a “culture school”, a process known as “cultural school development”. Such development processes are currently under way in many individual schools and above all within the scope of the large-scale project “Cultural agents for creative schools” (with around 150 schools in 5 German states participating).