Schools

Mean Diff

Std. Deviation

Std. Error Mean

95% Confidence Interval of the Difference

t

df

Sig. (2-tailed)

Lower

Upper

Experimental

group

School A

1.067

1.321

.341

.335

1.798

3.127

14

.007*

School B

1.000

.756

.195

.581

1.419

5.123

14

.000*

Controlled group

School A

.000

.707

.204

−.449

.449

.000

11

1.000