Table 5. Final model estimates for fixed effects, reading and science.

	Reading score a			Science score a
Model	Final			Final
Parameter	Estimate	95% CI	Sig	Estimate	95% CI	Sig
Intercept	2762.7	2333.4–3192.0	.000	3011.7	2555.1–3468.2	.000
Gifted status
No	-173.3	-(195.6–151.0)	.000	-232.3	-(258.0–206.5)	.000
Yes	0 b	.	.	0 b	.	.
Limited English Proficiency
No	114.3	94.7–134.0	.000	151.9	129.6–174.2	.000
Yes	0 b	.	.	0 b	.	.
Ethnic group
Native American	11.4	-160.9–183.8	.897	-120.1	-319.7–79.6	.239
Asian	-32.4	-69.2–4.3	.084	-11.8	-54.2–30.6	.585
African American	-133.0	-(159.2–106.8)	.000	-187.9	-(217.8–157.9)	.000
Hispanic	-85.9	-(106.5–65.3)	.000	-108.5	-(132.2–84.8)	.000
Caucasian	0 b	.	.	0 b	.	.
Mobility
Moved to a different district between the fall and spring	-56.0	-(83.4–28.5)	.000	-59.2	-(89.2–29.3)	.000
Moved to a different school between the fall and spring	-45.0	-(79.3–10.8)	.010	-72.8	-(111.7–34.0)	.000
Stayed the whole year	0 b	.	.	0 b	.	.
Eligibility to free or reduced lunch
Free lunch	-76.4	-(96.2–56.6)	.000	-80.0	-(102.6–57.4)	.000
Reduced lunch	-70.0	-(98.7–41.3)	.000	-67.5	-(100.3–34.6)	.000
Not eligible	0 b	.	.	0 b	.	.
Gender
Male	-27.6	-(40.4–14.9)	.000	44.4	29.6–59.1	.000
Female	0 b	.	.	0 b	.	.
Teachers’ highest degree
Bachelor’s degree	-9.8	-35.5–15.9	.452	-26.6	-53.9-.8	.057
Master’s degree	0 b	.	.	0 b	.	.
Days absent no illness	-3.1	-(4.7–1.6)	.000	-4.6	-(6.5–2.8)	.000
Ventilation rate [l/s per person]	4.3	-.5–9.1	.078	4.6	-.5–9.7	.074
Indoor T [°C]	-7.4	-18.0–3.1	.167	-12.4	-(23.5–1.2)	.031
Ventilation rates ≥ 7.1 l/s per person filtered
Ventilation rate [l/s per person]	16.0	8.9–23.1	.000	11.1	3.0–19.1	.008
Indoor T [°C]	-6.5	-16.3–3.2	.189	-11.3	-(22.5-.2)	.046

^a Dependent variables

^b This parameter is set to zero because it is redundant