Table 2.

Teacher fidelity by implementation year (n=23)

		Baseline Fidelity	Year 2 Fidelity	Year 3 Fidelity
	Lesson	Mean (SD), Median, Range	Mean (SD), Median, Range	Mean (SD), Median, Range
Attempts	4	75 (19), 75, 31–100	68 (20), 69, 25–94	66 (25), 75, 6–94
	11	75 (16), 77, 38–92	71 (20), 77, 23–92	80 (15), 85, 38–100
Omissions	4	33 (14), 33, 8–67	25 (21), 23, 0–100	28 (19), 23, 7–100
	11	42 (11), 42, 18–60	51 (16), 50, 27–100	50 (15), 50, 25–80
Additions	4	25 (15), 21, 7–60	26 (12), 23, 0–50	25 (21), 21, 0–100
	11	70 (15), 71, 44–100	50 (18), 55, 17–80	42 (21), 39, 0–80
Changes	4	13 (18), 8, 0–80	12 (16), 7, 0–50	15 (22), 11, 0–100
	11	22 (15), 18, 0–60	16 (15), 13, 0–60	13 (14), 9–40
New methods	4	12 (9), 13, 0–33	13 (9), 11, 0–33	11 (8), 9, 0–25
	11	12 (7), 10, 0–30	13 (20), 9, 0–100	10 (5), 10, 0–20