He said the number of double majors had increased almost every year.

An estimated 8.3 percent have double majors, up from 6.4 percent last year.

Still, many schools are seeing a steady rise in double majors.

Degree programmes are offered to students in the form of single and double majors.

The university provides double majors without any extra credits hours requirement.

Some schools report that 30% to 40% of their undergraduates are double majors.

Compared to those with only the math/science major, double majors have returns of up to 30 percentage points.

In contrast, a 3.9% premium appears for double majors from Research institutions, where less than a quarter of students add a second major.

The greatest increase in the number of double majors appears to be happening at the most selective colleges.

Different institution types may also vary in the culture surrounding double majors.