Likewise, a U.S. Department of Education study found that among children living with both biological parents, those with highly involved fathers were 42 percent more likely to earn A grades and 33 percent less likely to be held back a year in school than children whose dads had low levels of involvement. But little research has examined the association between paternal involvement per se and college graduation.

I investigated that association using data from the National Longitudinal Study of Adolescent Health (Add Health), a longitudinal study of a nationally representative sample of adolescents who were in grades 7 to 12 in the 1994-'95 school year. The Add Health data indicate that young adults who had involved fathers when they were in high school are significantly more likely to graduate from college.

Specifically, 18 percent of teens reported that their father was not involved in their lives. Among the rest, I relied on a scale of adolescent-reported paternal involvement—measuring such activities as playing a sport, receiving homework help, or talking about a personal problem with their biological, adoptive, or step-father—to divide the remaining portion of teens into roughly equal groups of adolescents with somewhat involved, involved, or highly involved fathers. Compared to teens who reported that their fathers were not involved, teens with involved fathers were 98 percent more likely to graduate from college, and teens with very involved fathers were 105 percent more likely to graduate from college, controlling for respondent’s age, race, ethnicity, level of mother’s education, and household income as a teen. Clearly, young women and men with more engaged fathers are more likely to acquire a college diploma than their peers without such a father.

How does this story vary by young adults’ socioeconomic background? Using maternal education as a proxy for socioeconomic status, the figure below indicates that, unsurprisingly, young adults from less-educated homes are markedly less likely to acquire a college degree. Nevertheless, this figure—which does not adjust for background factors—also shows that young adults whose mothers were at least high-school-educated appear to benefit more consistently from having an involved father in their life than young adults whose mothers were high school dropouts. In particular, the figure suggests that when it comes to college graduation, though father involvement matters for most young adults, it seems particularly important for young adults from moderately and highly educated homes.

If paternal involvement is important for higher education completion in America, what kind of family structure seems most likely to facilitate such involvement? The next figure—which does not adjust for background factors—indicates that adolescents are much more likely to report that they have a father who is involved or highly involved if their biological parents are married. That association between paternal involvement and family structure holds true for families of all education levels. In other words, an engaged approach to fatherhood is more common for adolescents living in an intact, married family, whatever the parents’ educational attainment. But note that the most involved fathers are generally found in homes where the mother is college educated.

What is it that links paternal involvement and college graduation? Four mechanisms seem particularly likely. First, involved fathers may provide children with homework help, counsel, or knowledge that helps them excel in school. Second, involved fathers may help children steer clear of risky behaviors—from delinquency to teenage pregnancy—that might prevent them from completing college. Third, involved fathers may help foster an authoritative family environment (characterized by an appropriate mix of engagement, affection, and supervision) that is generally conducive to learning. Finally, involved fathers may be more likely to provide financial support to children seeking a college education. However, some other unmeasured factor such as a high-quality marriage or a child’s personality traits may account for the association documented here between high levels of paternal involvement and the odds that a young adult graduates from college.