Гимназия
On 4 April 1627 Gueintz took over from Sigismund Evenius as rector of the important Gymnasium (school) at Halle. During his tenure other noted educationalists at the school would include , David Schirmer and Philipp von Zesen. However, in 1630 he became involved in a high-profile and acrimonious dispute over teaching priorities with Samuel Scheidt, following which the famous composer lost his music directorship in Halle, becoming, for the time being, an unquiet freelance music maestro.