With student loans reaching an all-time high, it's no surprise that many are now questioning whether their education is worth the expense.

The average 2015 college graduate completed their education with $35,051 in student loan debt, according to a study by Edvisor, and a survey by Salary.com found that 35% of 15,000 respondents believe a degree isn't worth the price tag, with another 43% claiming it isn’t necessary to succeed in life.

While not all degrees are created equal, and you can always find a career in a field you didn’t major in, certain degrees are a better bet for students looking for the highest return on their education investment. In fact, a 2015 report by Georgetown University’s Center on Education and the Workforce estimated that the difference in lifetime wages between the highest- and lowest-paying college majors is about $3.4 million. READ MORE