Table 1.

Descriptive statistics by gender, grade, and achievement group.

	Gender Frequencies		Grade/Year Frequencies		Total Freq.	Mean IQ	Mean Grades
	Boys	Girls	First	Second
Underachieving	137	81	127	91	218	101.78	4.30
Normal-achieving	532	437	496	473	969	100.29	6.30
Overachieving	70	143	111	102	213	101.11	8.39
Total	739	661	734	666	1400	100.00	6.30
	χ2 = 44.51*			χ2 = 3.57	F = 1.06	F = 541.0*

^*p < 0.001.