Table 5. Means (and standard deviations in parentheses) of each speaker’s proficiency score

Group	Speaker	Score (by students)	Score (by teachers)
Adv	1215	4.45 (0.65)	4.35 (0.78)
	1112	3.51 (0.66)	3.84 (0.86)
	1216	3.52 (0.66)	3.84 (0.84)
	2211	3.33 (0.7)	3.6 (0.96)
	Mean	3.68 (0.83)	3.89 (0.91)
Low	2212	2.3 (0.73)	2.64 (0.79)
	2215	2.66 (0.8)	2.75 (0.83)
	2216	2.34 (0.72)	2.51 (0.82)
	2118	1.85 (0.85)	2.08 (0.88)
	1115	2.03 (0.76)	2.35 (0.92)
	Mean	2.23 (0.81)	2.48 (0.88)