Choosing a high school is a heavy decision for any parent. You take the campus tours, talk to neighbors, and consider all your options. But when you sit down to make the final choice about where your daughter will spend the next four years, you usually want more than just a welcoming vibe. You want proof that the environment works.
For decades, educational researchers have tracked the outcomes of women who attend single-sex schools. They compare their academic trajectories, career choices, and overall confidence levels to their peers in coed environments. The findings consistently point in one direction: removing boys from the classroom doesn’t shelter young women from the real world. It actively prepares them to navigate it.
The most obvious shift happens in math and science. In coed settings, a well-documented gender gap still exists in STEM participation, often peaking right around middle school. But data from the International Coalition of Girls’ Schools shows that graduates of all-girls high schools are six times more likely to consider majoring in math, science, and technology compared to girls from coed public schools. When girls aren’t worried about looking overly ambitious or nerdy in front of teenage boys, they take harder classes and stay in the STEM pipeline longer.
That willingness to step up carries directly into leadership. A comprehensive study conducted by the Goodman Research Group found that 93% of girls’ school graduates report they were offered greater leadership opportunities than their coed peers. Because girls hold every single student council seat, team captain spot, and club presidency at a school, like Mount St. Mary Academy, leadership becomes a normal expectation rather than a rare achievement. The same study noted that 80% of these graduates go on to hold leadership positions in their adult careers.
The benefits also extend far beyond the workplace. Researchers at UCLA’s Higher Education Research Institute discovered that alumnae of single-sex schools demonstrate higher levels of civic engagement. According to their surveys, these graduates are more likely to vote, participate in political discussions, and volunteer in their local communities. When young women spend four years in an environment that expects them to use their voices, they don’t suddenly go quiet after graduation. They keep speaking up.
Campus tours and open houses are a great starting point for the high school search. They show you where your daughter will eat lunch, play sports, and study. But the research gives you a window into who she will become. The numbers make it clear that an all-girls education is a measurable, long-term investment in her confidence, her career, and her willingness to lead.
