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September 02, 2014

The Value of a College Degree

Jaison R. Abel and Richard Deitz

This post is the first in a series of four Liberty Street Economics posts examining the value
of a college degree
.


Not so long ago, people rarely questioned the value of a college degree. A bachelor’s degree was seen as a surefire ticket to a career-oriented, good-paying job. Today, however, many people are uncertain whether going to college is such a wise decision. It’s easy to see why. Tuition costs have been rising considerably faster than inflation, student debt is mounting, wages for college graduates have been falling, and recent college graduates have been struggling to find good jobs. These trends might lead one to believe that college is no longer a good investment. But when you dig into the data, is this really true? This week, we examine the value of a college degree in a four-part blog series. In this first post, we do the basic math and show that despite what appears to be a set of alarming trends, the value of a bachelor’s degree for the average graduate has held near its all-time high of about $300,000 for more than a decade.

     To estimate the value of a bachelor’s degree, we measure the costs and benefits for the average college graduate—calculations outlined in detail (with appropriate caveats) in our recent article in the New York Fed’s Current Issues series. The costs of college are the average tuition and fees paid by undergraduates plus the “opportunity costs,” or the wages one gives up while in school, estimated as the average wages of someone with only a high school diploma. The benefit of college is the “college wage premium”—the extra wages one can expect to earn having obtained a college degree, estimated as the average wage of college graduates compared with the average wage of those with only a high school diploma, summed up over a working life of more than forty years.

     To come up with a dollar figure for the value of a bachelor’s degree, we use the concept of net present value (NPV). The NPV captures the flow of the costs and benefits of going to college over time. During the first four years, the costs of college result in a negative cash flow, followed by a positive cash flow that is received over one’s working career (the college wage premium), taking the time value of money into account (meaning that future years are “discounted” at a standard rate of 5 percent, because money earned in the future is worth less than money in hand today).

     The chart below plots the NPV for a bachelor’s degree between 1970 and 2013, calculated using our methodology and expressed in 2013 constant dollars. We estimate that the value of a college degree fell from about $120,000 in the early 1970s to about $80,000 in the early 1980s, before more than tripling to nearly $300,000 by the late 1990s, where it has remained, more or less, ever since. Despite drifting down somewhat in the aftermath of the Great Recession, the value of a bachelor’s degree has remained near its all-time high.


Chart 1 shows Net Present Value of a Bachelors Degree 1970-2013


     Another way to assess the value of a college degree is to see how long it takes to break even on the upfront investment. Here, we use the discounted cash flows that feed into our NPV calculation to determine the first year in which the sum of annual cash flows turns positive. The chart below plots the number of years required to recoup the cost of a bachelor’s degree earned between 1970 and 2013.


Chart 2 shows Years to Recoup the Cost of a Bachelors Degree 1970-2013



     The time required to recoup the costs of a bachelor’s degree has fallen substantially over time, from more than twenty years in the late 1970s and early 1980s to about ten years in 2013. So despite the challenges facing today’s college graduates, the value of a college degree has remained near its all-time high, while the time required to recoup the costs of the degree has remained near its all-time low.

     Of course, it’s possible that some part of what we estimate as the value of a college degree isn’t driven by the skills an individual acquires while in college: people who earn a college degree may simply differ in their innate skills and abilities from those who don’t obtain a degree. Maybe some college graduates would have earned higher wages even if they had never gone to college. Separating out these two effects in research studies is extremely difficult. Still, while we can’t rule out the possibility that this type of selection is at work, it seems likely that at least on average, the value of a bachelor’s degree remains substantial.

     Why has the value of a college degree remained so high even while tuition has been rising and the wages for college graduates have been falling? The primary reason is that the wages of high school graduates have also been falling, reducing the opportunity costs of going to school and keeping the college wage premium near its all-time high.

     While our estimates make it seem like college always pays handsomely, that may not always be the case for everyone. Our next blog post will look at what happens to the value of college when it takes five or six years to complete a degree instead of four. Our third post will show that when we look at the distribution of wages for college graduates, college actually does not appear to have paid off for a sizable fraction of those who made the investment. To wrap up the blog series, our final post will examine whether there are any recent signs of improvement in the labor market for college graduates.


Disclaimer
The views expressed in this post are those of the authors and do not necessarily reflect the position of the Federal Reserve Bank of New York or the Federal Reserve System. Any errors or omissions are the responsibility of the authors.





Abel_jaison
Jaison R. Abel is an officer in the Federal Reserve Bank of New York’s Research and Statistics Group.


Deitz_richard
Richard Deitz is an assistant vice president in the Bank's Research and Statistics Group.


Posted by Blog Author at 07:00:00 AM in Labor Economics
Comments

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Regarding the comments below about issues of selection, it is certainly a concern any time one compares the wages of college graduates to the wages of those without a college degree. While the wage estimates we use in our study do control for differences in observable characteristics between groups and over time, as we note, we cannot rule out the possibility that those who attend college have higher unobserved skills and abilities than those who don’t, and that’s why we see that they earn more than a typical high school graduate. In research studies, it is extremely difficult to distinguish between these two effects due to the information that is required to do so. Promising recent research utilizing individual-level longitudinal data linked to wage records from state unemployment insurance systems that includes a wide array of detailed information, including measures of innate ability, continues to find large wage increases from obtaining a college degree. Thus, while research of this nature is still preliminary, differences in skill or ability are unlikely to explain the entire college wage premium. Nonetheless, this is particularly challenging question to address, and one that is in need of further research.

In terms of the sample we rely upon for our analysis, we exclude those with a graduate degree from our college wage estimates to focus on the economic benefit of a bachelor’s degree in and of itself. As a result, an important part of the payoff to a bachelor’s degree—its utility as a stepping stone to a postgraduate degree—is not captured in our analysis.

Were people with advanced degrees in your cohort?

using average income in this highly skewed distribution misleads.

What a shallow dismissal of the hypothesis that college-bound 18-year-olds might already be capable of higher earnings than those who aren't college bound. The difference needn't have anything to do with "innate skills and abilities"--surely one's first 18 years of life also matter! It shouldn't be hard to demonstrate, at least, that the populations of college-bound and non-college-bound 18-year-olds have significantly different skills and interests. How those differences translate into different earning potential is undoubtedly complicated, but I think the burden of proof is on those who would equate "benefit of college" with difference in lifetime earnings. You've cited no empirical evidence whatsoever to meet that burden of proof.

An interesting set of figures, for which many thanks, and relevant to my own country. Clearly there is likely a big selection effect here, as you indicate " some college graduates would have earned higher wages even if they had never gone to college". any thoughts on how big this could be, and on ways of getting at it?

The value of a Bachelor's degree in constant dollars seems low compared to figures reported by other studies, including other reports by other FRBNY researchers and researchers at other Federal Reserve banks. Please identify the reasons for the discrepancies.

Regarding the two comments below about our wage calculations (i.e., what assumptions did we make about the college wage premium in the future, and how we calculate wages), we observe what people of various ages earn in a particular year, and then compare average wages over one’s working life for college graduates to those with only a high school diploma, taking into account that those who choose to go to college tend to delay entry into the labor market by a few years. For example, in estimating the value of a college degree in 1990, we look at the average wage a person with a certain level of education might expect to earn at age 20, 30, 40, and 50, based on what 20, 30, 40, and 50 year-old workers with that same level of education typically earned that year. The average wages and lifetime earnings profiles we calculate are adjusted using statistical techniques to control for differences in observable characteristics of workers across education groups and over time (for more details on these calculations, see the box in our recent Current Issues article). So all in all, for any given year, the estimates we produce reflect the earnings differentials that exist in that year. Of course, we have no guarantee that these earnings patterns will hold in the future for people graduating from college today, but this type of calculation provides a rough guide.

The study proves the reason why countries in the east (India, China, Japan, Korea etc.) have been culturally valuing college education!!!

What assumption did the authors make regarding the college wage premium in the future? Is it increasing/decreasing/staying the same?

"The benefit of college is the “college wage premium”—the extra wages one can expect to earn having obtained a college degree, estimated as the average wage of college graduates compared with the average wage of those with only a high school diploma, summed up over a working life of more than forty years."

I'm not following on how the wages are calculated. Are the wages for graduates of that year--meaning that in 2012, college grads in 2012 earned X, and costs for 2012 (HS grad wages plus tuition costs) were Y, so it would take Z years? Or is it an average of college wages over an extended period of time?

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