Fostering Achievement of Low-, Average-, and High-Achievers Students in Biology through Structured Cooperative Learning (STAD Method)

Table 9

ANCOVA of high-achiever students.

Tests of between-subjects effects
Source	Type III sum of squares	df	Mean square	F	Sig.
Corrected model	562.879^a	2	281.440	28.751	0.001
Intercept	257.222	1	257.222	26.277	0.001
Pretotal	165.157	1	165.157	16.872	0.001
Group	261.717	1	261.717	26.736	0.001
Error	97.890	10	9.789
Total	68630.000	13
Corrected total	660.769	12

^aR squared = 0.852 (adjusted R squared = 0.822).