 Between 1909 and 1911 he made several requests to be transferred to another school, which was finally granted, so that on 1 May 1912 he began his work at a school in Degerloch, a suburb of Stuttgart.At that time he also decided to go ahead with his plan to avenge the derision he had to endure, as even at his new workplace he saw hints of people "knowing", and initially chose the spring of 1913 to put it into practice, but finally determined the last days of the summer holidays for his revenge.In the days leading to the murders he wrote several letters to explain his deed.