Table 2.

Gender, Ethnicity, and Grade Comparisons by Respondent Type.

	Valid respondents		Invalid respondents
	n	%	n	%	Chi Square
Gender					305.09***
Female	24,667	51.4%	1,473	37.0%
Male	23,360	48.6%	2,512	63.0%
Ethnicity					632.02***
White	27,219	56.7%	1,437	36.1%
Non-White	20,808	43.3%	2,548	63.9%
Grade					44.81***
Grade 9	12,518	26.1%	1,225	30.7%
Grade 10	12,466	26.0%	962	24.1%
Grade 11	11,937	24.9%	890	22.3%
Grade 12	11,106	23.1%	908	22.8%

^*** p < .001.