The good souls of the CPG. Michael and Helga Grellner have been working at the Christoph Probst High School in Gilching for 25 years.

There is no traditional vocational training for becoming a caretaker, and there is no specific educational path required. Around 1,600 students currently attend the high school, who are looked after by 160 teachers. There are a total of 24 cleaning staff every day after school who take on the work on an hourly basis. The last cleaning company employees often don’t arrive until around 10 p.m.