Table 1 Descriptive Statistics—Public Schools

	1–9 ENEM Takers			10–19 ENEM Takers			More than 19 ENEM Takers
	Mean	SD	# Obs.	Mean	SD	# Obs.	Mean	SD	# Obs.
Test scores	34.98	12.97	8,955	34.33	12.39	28,357	37.96	14.35	974,716
Male	0.37	0.48	8,199	0.37	0.48	25,865	0.38	0.48	888,371
Correct school grade	0.35	0.48	8,150	0.42	0.49	25,700	0.64	0.48	885,039
Age	22.05	6.53	8,157	21.53	6.30	25,719	19.34	4.50	885,529
White	0.33	0.47	7,540	0.36	0.48	23,992	0.38	0.49	840,906
Father has college degree	0.02	0.13	6,633	0.02	0.14	20,913	0.05	0.21	753,064
Mother has college degree	0.03	0.16	7,242	0.02	0.15	22,996	0.05	0.22	818,120
Family income < 10 X min. wage	0.99	0.08	7,295	0.99	0.09	23,295	0.98	0.13	826,234
Number of students in senior year	78.17	69.02	6,775	78.16	47.19	24,066	301.22	233.43	943,640
Frac, of teachers with college degree	0.38	0.46	6,889	0.33	0.46	24,230	0.29	0.44	944,242
Teacher/student ratio	0.15	0.12	6,897	0.13	0.10	24,230	0.11	0.11	944,328
Computer/student ratio	0.03	0.06	5,619	0.03	0.05	20,704	0.02	0.16	870,920
Staff/student ratio	0.31	0.38	6,897	0.26	0.27	24,230	0.14	0.70	944,475
Science lab	0.29	0.45	6,897	0.29	0.46	24,235	0.57	0.50	944,576

Notes: Sources are ENEM microdata and school census. Table 1 reports the average ENEM scores, socioeconomic characteristics of ENEM takers, and school observable inputs in public schools, pooling the data from 2005–2007 period. The socioeconomic characteristics reported are gender, whether a student is in the correct school grade, age, race, parental schooling, and family income. The school observable inputs reported are the number of students in the senior year, the proportion of teachers with college degree, whether a school has a science lab, and the ratios of teachers, computers, and staff to students.