WASHINGTON: Reports of sexual assaults at the three US military academies surged by more than 50 percent in the 2014-15 school year, and complaints of sexual harassment also spiked, according to documents reviewed by The Associated Press.

A senior defense official says the sharp increases were due largely to students’ growing confidence in the reporting system and expanded awareness programs over the past several years. The programs have been aimed at making victims more aware of the reporting process and more comfortable seeking help.

But the increases raise questions about whether criminal assaults and harassment are on the rise or if the numbers reflect a growing willingness of victims to come forward.