Overall Random Effects

Uncorrected

ES Percentile Gain Fail-safe N

.37 (N=85) 14 3,060

Corrected

ES Percentile Gain Fail-safe N

.44 (N=85) 17 3,655

Random Effects for Length of Teaching(in years)

UncorrectedQuartile Range ES Percentile

Gain

2 to 5 .34 (N=16) 13

6 to 9 .33(N=18) 13

10 to 15 .36(N=22) 14

16 to 32 .42(N=15) 16

CorrectedQuartile Range ES Percentile

Gain

2 to 5 .42 (N=16) 16

6 to 9 .39(N=18) 15

10 to 15 .44(N=22) 17

16 to 32 .51(N=15) 20

Random Effects for Length of Tool Use(in months)

UncorrectedQuartile Range ES Percentile

Gain

1 to 5 .27 (N=17) 11

5 to 18 .31(N=20) 12

24 to 27 .43(N=16) 17

30 to 60 .42(N=18) 16

CorrectedQuartile Range ES Percentile

Gain

1 to 5 .32 (N=17) 13

5 to 18 .38(N=20) 15

24 to 27 .53(N=16) 20

30 to 60 .51(N=18) 20

Random Effects for Percentage of Time

Tools Used in the ClassroomUncorrected

Quartile Range ES Percentile

Gain

10 to 40 .09 (N=18) 4

45 to 70 .40(N=18) 16

75 to 80 .67(N=18) 25

85 to 95 .18(N=17) 7

CorrectedQuartile Range ES Percentile

Gain

10 to 40 .11 (N=18) 4

45 to 70 .48(N=18) 18

75 to 80 .82(N=18) 29

85 to 95 .22(N=17) 9

Random Effects for Confidence inPromethean Technology Use

UncorrectedScale

Response ES Percentile Gain

1 -- --

2 .18(N=3) 7

3 .33(N=18) 13

4 .33(N=32) 13

5 .48(N=18) 18

CorrectedScale

Response ES Percentile Gain

1 -- --

2 .20(N=3) 8

3 .38(N=18) 15

4 .41(N=32) 16

5 .59(N=18) 22