Lets just run some realistic math.
Start working at the age of 16. Save 2k a year till 23. Pay your way through college too.
That gives you a net worth of 12k. Not much, but a start.
Now, why don't they teach how easy that is in schools? Nothing about it is very hard. It's not hard to save money.
Sorry, but I don't buy being able to work your way through college in 5 years, pay for college, and save 2k/year. Around here college costs about $25k/year for state universities (Purdue, IU, Ball State) and private schools are $50k and over. How you gonna earn over $30k/year (remember, you have to pay taxes on that income) while going to college full time?