About two-thirds of American parents are either saving for college or making a plan to pay for college, according to Sallie Mae's How America Saves for College 2018 study. And among those parents who are saving for college, the average amount they have saved is up significantly from the last time the study was conducted.Here's a rundown of how American's college savings have changed since 2016, some key reasons for the increase, and what types of accounts Americans are using to save.Image source: Getty Images.Continue reading