If you’re a kid in a school district or school that uses Edsby, take note: Your mom is vastly more likely to be checking your grades on Edsby than your dad.

Edsby lets parents log in to see their childrens’ school news, academic schedules, attendance records, grades and more.

An analysis of login information on Edsby reveals that 73% of the parents that log in are mothers. Only 14% are fathers. Stepmothers, guardians and grandmothers each register as about 1% of login traffic.

Edsby examined more than 400 million Edsby logins in arriving at the finding.