Table 2 Evaluation of individual teachers by students (global performance rated on a 7-point Likert-like scale from −3 ‘very bad’ to + 3 ‘very good’)

2.17

2.28

n.s.

2 (2–3)

3 (1–3)

n.s.

2.64

2.71

n.s.

3 (2–3)

3 (2–3)

n.s.

2.57

2.74 ¹⁾

p = 0.008

3 (2–3)

3 (3–3)¹⁾

n.s.