Characteristic	No N = 10,722,850 (95% CI 95% CI)¹	Yes N = 11,679,079 (95% CI 95% CI)¹	p-value²
The percentage of all students who reported being in 6th, 7th, or 8th grade (middle school), or in 9th, 10th, 11th, or 12th grade (high school), n (%)			0.7
1	4,406,603 (41%) (95% CI 33%, 50%)	4,898,601 (42%) (95% CI 34%, 51%)
2	6,289,445 (59%) (95% CI 50%, 67%)	6,770,467 (58%) (95% CI 49%, 66%)
Unknown	26,802	10,011
race_cat, n (%)			<0.001
asian	479,618 (4.6%) (95% CI 3.4%, 6.2%)	993,836 (8.6%) (95% CI 6.7%, 11%)
black	1,173,941 (11%) (95% CI 8.7%, 14%)	1,829,191 (16%) (95% CI 13%, 19%)
hispanic	2,174,704 (21%) (95% CI 17%, 25%)	3,643,929 (32%) (95% CI 28%, 35%)
other	132,992 (1.3%) (95% CI 0.93%, 1.7%)	154,855 (1.3%) (95% CI 0.85%, 2.1%)
white	6,514,111 (62%) (95% CI 57%, 67%)	4,871,198 (42%) (95% CI 39%, 46%)
Unknown	247,484	186,070
The percentage of all students who reported being either female or male, n (%)			<0.001
1	4,885,079 (46%) (95% CI 44%, 48%)	6,165,729 (53%) (95% CI 50%, 56%)
2	5,780,121 (54%) (95% CI 52%, 56%)	5,470,385 (47%) (95% CI 44%, 50%)
Unknown	57,650	42,965
¹ CI = Confidence Interval
² Pearson’s X^2: Rao & Scott adjustment