http://www.guttmacher.org/pubs/journals/3422602.html
• Education. Among women aged 20 or older, those who had not graduated from high school accounted for 13% of abortions (Table 1). High school graduates made up 30% of women having an abortion, and those with at least some college, 57%.
The abortion rate among college graduates (13 per 1,000) was lower than average; moreover, women with college degrees were the only educational group to show a higher-than-average decline in abortion rates (30%) between 1994 and 2000. The relatively small proportion of pregnancies among college graduates that ended in abortion (21%) and the below-average pregnancy rate account for their low abortion rate. Women with some college had a pregnancy rate that was lower than average, but 38% of their pregnancies ended in abortion in 2000, resulting in the highest abortion rate of any educational group (26 per 1,000).
We also examined abortion rates by school enrollment status among women younger than 20 (not shown). Nearly two-thirds of adolescents who had an abortion were enrolled in school during the month they became pregnant. Enrollees had a lower abortion rate than adolescents who were not in school (19 vs. 65 per 1,000). The abortion rate for adolescents enrolled in school decreased by 29% between 1994 and 2000, and the rate for their out-of-school peers declined by 13%.
•Religious affiliation. The majority of women older than 17 who obtained an abortion reported a religious affiliation. The highest proportion (43%) identified themselves as Protestant. Twenty-seven percent of women having an abortion identified themselves as Catholic, and 8% as a member of another religion; 22% reported no religious affiliation. Thirteen percent identified themselves as "born-again" or evangelical, three-fourths of whom were Protestant (not shown).
Women affiliated with "other" religions and those who did not identify with any religion had the highest abortion rates (31 and 30 per 1,000, respectively). Women with no religious affiliation experienced the largest decline in abortion of all the groups examined (35%).