I've done the math...the minimum wage I would have worked for in the 70s was $3.60 per hour. Now it's what, $6.40? It has not even doubled in 30 years, yet the cost of school has approximately quadrupled.
Nope, minimum wage in the 70s ranged from 1.60 -2.90. Here's a link:
http://www.infoplease.com/ipa/A0774473.html. I looked it up because I was pretty sure minimum wage was 3.35 in the mid-80s when I was a college student.
So let's do the math again, using your 1386 hours/year:
1970s student, assuming mid-point minimum wage of $2/hour = $2772
2008 student, making today's minimum wage of $7.25/hour = $9980
You said that in the 70s a year of school was about $4989 (that sounds a little high to me because I paid about $5000/year in the mid-80s, but things vary by state). I don't have any way to verify what college cost in the 1970s.
Here's a link for
today's NC state schools:
http://www.soicc.state.nc.us/soicc/planning/c2c.htm
According to this, a student could attend Ap-State for $9042/year or NC State for $12,157/year or UNC-Wilmington for $10,859 -- that's room, board, tuition -- all of these are fine schools, and I'd be pleased for my daughters to attend them.
So here's how it looks:
The 1970s student earns $2772 and needs $4989 (again, this $4989 isn't something I can confirm or deny).
The 2009 student earns $9980 and needs $9042-$12,157 (these figures CAN be confirmed with the above links).
It's not looking like things are worse today.
A student who's working his way through school is going to have to work more than 20 hours/week during the school year AND he's going to need a better-than-minimum wage job.
In the real world, the student who's working his way through school probably isn't going to make it if he's piddling along at a minimum wage job. BUT most of my high school students earn more than minimum, so I don't see why college students shouldn't do as well. For example, my recent student teacher took a pay cut when she stopped working as a cocktail waitress and started teaching school (she did it, of course, for the benefits, but her pay went down!).
One huge difference, of course, is that today's students haven't learned to economize. Those of us who grew up in the 1970s were used to fewer clothes in our closet, we didn't necessarily have a personal car when we went away to college, and we had to use the phone on the wall down the hall. Today's college student has much higher expectations for material luxuries.