Wearing ties and blazers, the students are instructed in the art of becoming young gentlemen.The principal’s research taught him that boys will go to astonishing lengths to defend their team.

There is now a long waiting list for entry into this academy.

Single-sex academies like these two Dallas schools not only benefit the students fortunate enough to attend but also are a part of the solution to the growing boy gap in education and the persistent girl gap in math and science.

Today millions of American boys are languishing academically.

Wealthy families have always had the option of sending their children to all-male or all-female schools, but parents of modest means have rarely had that choice.

That changed in 2001, when four female senators sponsored legislation that sanctioned single-sex classes and academies in public schools.

Today, there are more than 500 public schools that offer single-sex classes and 116 public all-girl or all-boy academies.

Many are in struggling urban neighborhoods and many have proven to be hugely successful.

The Irma Lerma Rangel Young Women's Leadership School in Dallas opened in 2004 and enrolls 473 girls in grades six through 12.

More than 70 percent of the students are from economically disadvantaged homes and more than 90 percent are minorities. In less than a decade, the school has won multiple academic achievement awards and, according to In 2011, Dallas opened a comparable public school for young men: the Barack Obama Male Leadership Academy.

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