Domain category	Bias analysis before identifying and targeting low propensity cases (n=11,450)			Bias analysis including low propensity cases (n=8,310)
Domain category	Nonresponse rate	Overall weighted mean	Bias^a	Nonresponse rate (final)	Overall weighted mean	Bias^a
School type
Public	71.2	92.9	–1.15*	27.9	92.5	–0.37
Private	56.6	7.1	1.15*	25.6	7.5	0.37
Charter school
Yes	83.2	1.4	–0.01	32.7	1.6	0.03
No	71.0	91.2	–1.14*	27.8	90.9	–0.40
Private	56.6	7.3	1.15*	25.6	7.5	0.37
Religious affiliation
Yes	56.6	6.8	1.14*	25.1	7.2	0.39
No	56.7	0.3	0.00	36.2	0.3	–0.02
Public	71.2	92.9	–1.15*	27.9	92.5	–0.37
School is regular secondary
Yes	56.4	6.5	1.01*	25.5	6.8	0.31
No	59.2	0.7	0.14	26.7	0.7	0.07
Public	71.2	92.9	–1.15*	27.9	92.5	–0.37
Race
Hispanic	69.8	4.0	–0.25	31.2	3.7	–0.29
Asian	86.0	16.7	–0.60	28.8	15.8	–0.90
Black	80.8	14.6	–1.88*	31.6	14.1	–0.51
Other	63.8	64.7	2.73*	26.4	66.4	1.70