The gender Gap. 

This plays an important role in the world today because it exits areas where men and women are difference. 

1. Attendance: Female students today earn about 60% of BA degrees.

2. Achievement: Girls and women have caught up in math and science scores.

3. Behavior: Boys are more likely to be diagnosed with ADHD and other disorders; they are more likely to be medicated.

But there's also any other factors that affects the education.