How we rank graduate programs in the sciences
Few schools prepare teachers for life in the classroom, research shows.
Accreditation helps to ensure employers will accept your online degree.
At each school, new entrants during the 2015-2016 school year were an average age of at least 38, U.S. News data show.
Online programs vary widely in how they organize courses throughout the year, experts say.
Programs might offer course demos or classes to determine whether online learning is a fit.
Despite balancing full-time jobs with an education, many online MBA students still find the time to network.