Understanding the Practice of External School Evaluation by Inspection Teams

This chapter introduces the model of the flexible decision threshold to explain how school inspection teams navigate efficiency and justifiability pressures when finalising scoring decisions. Inspectors engage in preparatory scoring work before on-site visits by reviewing school documentation to form initial impressions. During inspections, early scoring tendencies emerge but are not necessarily determinative, as inspectors balance quick decisions with defensible ones. The flexible decision threshold model captures how the point at which scoring preferences become firm decisions varies based on task complexity and anticipated controversy. The treatment of exclusion criteria in Lower Saxony demonstrates that inspectors apply additional scrutiny to high-stakes decisions. Inspectors strategically collect evidence to justify scores, especially when deviating from schools’ self-perceptions. Potential complaints from schools disciplines inspectors to align scores with official criteria. The flexible decision threshold is reached when agreement and defensibility are achieved, but typically earlier for straightforward decisions and later for complex, consequential ones.