After her vicariate Kurschus became parish priest in
Siegen-Klafeld in 1993 and in Siegen-Weidenau in 1999. Since 2001 she was also deputy superintendent of the Evangelical Church District of Siegen. From 2005 to 2012 she held the function of Superintendent of the Protestant Church District of Siegen. In November 2011 she was elected by the Westphalian regional synod as
Praeses of the
Protestant Church of Westphalia (EKvW) and was introduced into the function of the leading clergy on 4 March 2012. Kurschus became a member of the Council of the
Protestant Church in Germany and deputy chairwoman of the Council in November 2015. She became commissioner of the EKD Council for relations with the Polish churches in 2016. On 20 November 2019 Kurschus was confirmed in the function of the
Praeses and re-elected for a further term. On 10 November 2021, Kurschus was elected as the President of the Council of the Protestant Church in Germany. On 20 November 2023, Kurschus resigned from her positions as the President of the Council of the Protestant Church in Germany and Praeses of the regional Protestant Church of Westphalia after allegations of having attempted to cover up a case of alleged inappropriate sexual behaviour by a church employee some twenty years ago. == Further functions ==