Table:
outcome variable
public high school
private high school
private high school minus public high school

mean
difference

log of reading score
6.284
6.365
0.081

log of mathematics score
6.278
6.362
0.084

log of science score
6.267
6.355
0.088

high school graduation
0.955
0.988
0.034

postsecondary attendance
0.793
0.909
0.116

university attendance
0.456
0.634
0.178

postsecondary graduation
0.506
0.667
0.162

university graduation
0.215
0.354
0.139

graduate or professional studies
0.048
0.130
0.081

Statement: by age 23, 99% of private school students had graduated from high school, about 3 percentage points above the figure for public school students.
Question: by age 23, 99% of private school students had graduated from high school, how many percentage points above the figure for public school students?
Answer: [0.033]