The Lifetime Earnings Myth Part II: College Grads only earn $732576 more than High School Grads

Posted by Student on 2009/03/13 @ 1736 Comments (2) (show tags and categories)

If you are fortunate enough to be in college right now, or if you ever went to college, then you are probably aware of the statistic that proclaims, “college graduates earn $1,000,000 more than high school graduates.” On this basis, you may have rationalized student debt as being a necessary liability for achieving this higher lifetime earning potential. It’s easy to see where this mythical million comes from: according to the oft-quoted statistic, by the time college grads retire they will be earning about $25,000 more per year than high school grads. Multiply that figure by 40 years of productive labor, and you get $1,000,000.

Student Loan Bubble recently discussed one major problem with this figure: new college graduates will only earn $7000 more per year than their high school peers, while shouldering significantly more debt than high school-educated workers. Additionally, high school grads will have at least four years worth of income before college grads even enter the workforce. The take home message from the first Student Loan Bubble article is that recent grads are facing a very real risk that they won’t be able to manage their student loan debt with such a meager income increase, at least during the first few years.

The first article provoked some interesting feedback such as the question, “what happens later in life?” In this article, Student Loan Bubble presents two graphs of lifetime earnings, which were calculated based on median income data from the US Census. The census provides data in 10-year aggregates, so Student Loan Bubble assumed a yearly pay raise that would make yearly earnings consistent with the census aggregates. After determining yearly income, Student Loan Bubble determined the cumulative income between the ages of 21 and 64.

The first graph presents yearly median incomes of High School and College graduates. You can click for a higher resolution version. Notice that the gap is not major while workers are young, and that by age 35, everyone has nearly achieved their maximum earning potential. It is difficult to perceive, but high school workers actually notice a slight pay decline between age 55 and 64.

student-loan-bubble-median-yearly

Next, Student Loan Bubble presents cumulative earnings, and these results might surprise you. By the time workers are 64, college grads will have earned $1,991,574 while high school grads will have earned $1,258,998. These are median figures, which means that 50% of workers will earn less than these amounts. The difference in median lifetime earning is $732,576, which is less than 75% of the fabled $1,000,000.

student-loan-bubble-median-cumulative

Consider, too, that it not unusual to pay $120,000 to attend a private university for 4 years, and the earning difference drops to approximately $600,000. Once interest expenses are included in this figure, and accounting for the very real risk of penalties for late payments, the earning difference will be reduced even further. It should be reiterated again that these are all median data, which are a robust measure that is not affected by high-earning outliers.

It is plainly evident from these graphs that college graduates can expect to earn more with their degree, but the exact amount of this earning difference deserves to be scrutinized. The next step is to examine the upper and lower quartiles to see how the relationship looks. Student Loan Bubble predicts that the earnings gap for the 25th percentile will be somewhat lower than the median difference, and that the 75th percentile will show a much larger income difference.

It is the conclusion of Student Loan Bubble that the $1,000,000 lifetime earning difference truly is a myth that is not supported by the median income data. In the case that this myth has been used to justify excessive student debt liabilities, it is possible that some students will be seriously disappointed by their lifetime earning potential.

Supplement: A CSV file is available to download here, for anyone who wishes to give these data a closer look.
student-loan-bubble-lifetime-median-income.csv

The housing bubble, explained through fascinating animation

Posted by Student on 2009/03/01 @ 0900 Comments (0) (show tags and categories)

The housing bubble, and the consequent credit crisis, is a very complex system that is elegantly and lucidly explained in the following video, created by Jonathan Jarvis.

There is at least one element missing from the video, which is mentioned but not expanded upon: Credit Default Swaps (CDS), which explain how insurance companies are also included in the flowchart. The Collateralized Debt Obligations (CDOs) are partially insured by CDSes, which is a guarantee that if the CDO stops earning money, the insurance company will pay the difference. Because the CDO market was actually the business of reselling housing mortgages (and we all know how that went) the CDS contracts are now in effect. Now, insurance companies must pay out sums of money that are a large portion of the total mortgage defaults.

Nevertheless, this video is fantastic, and it is a useful tool for learning more about the student loan bubble. In the same way that bankers created CDOs out of mortgages, student loan debt has also been packaged and resold to other bankers and investors. Unlike mortgages, students are not able to default on their loan repayments.

Excerpt from: http://vimeo.com/3261363

The goal of giving form to a complex situation like the credit crisis is to quickly supply the essence of the situation to those unfamiliar and uninitiated. This project was completed as part of my thesis work in the Media Design Program, a graduate studio at the Art Center College of Design in Pasadena, California.

The lifetime earning myth: go to college, make $1 million extra. The reality: recent college grads annually earn $7,415 more than high school grads.

Posted by Student on 2009/02/23 @ 0630 Comments (9) (show tags and categories)

In a recent article for Forbes Magazine, Kathy Kristof writes about “The Great College Hoax,” which debunks the premise that student debt will be offset by higher lifetime earnings. Kristof discusses the census finding that, on average, college-educated individuals earn $25,900 more per year than high school graduates, pointing out the fallacy of inferring too much about the reasons for this income discrepancy.

Student Loan Bubble sees a much more serious statistical error in this reasoning: recent graduates earn less at the beginning of their careers, and average (also called “mean”) earnings are a distorted representation of actual earnings. A few individuals (so-called outliers) who earn much more than the rest will distort the mean, while the median will be resistant to this problem. Wikipedia provides the following explanation of median versus mean:

The median is primarily used for skewed distributions, which it represents differently than the arithmetic mean. Consider the multiset { 1, 2, 2, 2, 3, 9 }. The median is 2 in this case, as is the mode, and it might be seen as a better indication of central tendency than the arithmetic mean of 3.166.

Calculation of medians is a popular technique in summary statistics and summarizing statistical data, since it is simple to understand and easy to calculate, while also giving a measure that is more robust in the presence of outlier values than is the mean.

The following table, entitled “Earnings By Occupation and Education,” presents median yearly earnings for individuals aged 21-24, broken down by educational attainment. Click on the image for the full-size version. The original census data are available from http://www.census.gov/hhes/www/income/earnings/call1usboth.html

student-loan-bubble-census-median-income

Students cannot expect to earn an “average” amount of money; in this case, the median is a much more accurate picture of reality. Among recent graduates, the median income discrepancy between college and high school grads is a mere $7,415, which is accompanied by tens of thousands in student debt repayment. Later in life, a college degree is “worth more,” but student debt repayment usually begins when the student is 21 or 22 years old; student lenders are not content to wait until the debtor earns a higher annual income.

It is the conclusion of Student Loan Bubble that the median income statistic deserves more attention, and that lifetime earnings are a misrepresentation of what recent graduates can expect to earn. Between college and high school graduates, loan debt uniquely affects the former, who do not earn dramatically more than the latter. College graduates in their early 20s are at unique risk of not earning enough to repay their student debts. The risk inherent in managing student loans as a young professional may not be offset by future earning potential.

Excerpt from: http://www.forbes.com/forbes/2009/0202/060.html

Census figures show that college grads earn an average of $57,500 a year, which is 82% more than the $31,600 high school alumni make. Multiply the $25,900 difference by the 40 years the average person works and, sure enough, it comes to a tad over $1 million.

But anybody who has gotten a passing grade in statistics knows what’s wrong with this line of argument. A correlation between B.A.s and incomes is not proof of cause and effect. It may reflect nothing more than the fact that the economy rewards smart people and smart people are likely to go to college. To cite the extreme and obvious example: Bill Gates is rich because he knows how to run a business, not because he matriculated at Harvard. Finishing his degree wouldn’t have increased his income.

All the while students have been lulled into thinking of the extra $1 million that will be theirs, they have been forced to disgorge an ever larger fraction of it in pursuit of the degree. While the premium that college grads earn over high schoolers has remained relatively constant over the past five years, the cost of acquiring a degree has risen at twice the rate of inflation, dramatically undermining any value a sheepskin adds.

Offsetting that million-dollar income discrepancy is the $46,700 four-year cost of tuition, fees, books, room and board at a public school and $99,900 at a private one–even after financial aid, scholarships and grants. Add all this to the equation and college grads don’t pull even with high school grads in lifetime income until age 33 on average, the College Board says. Even that doesn’t include the $125,000 in pay students forgo over four years.