At a private school in Texas, an investment club gives students practice managing a stock portfolio. But unlike so many other student portfolios that are essentially the fantasy football leagues of the stock market, students at the Greenhill School in Dallas have set up a portfolio that uses real money. Yes, real money — as in 100,000 actual dollars, chipped in by board members and other stakeholders. With Greenhill starting its academic year this morning, Marketplace Morning Report host David Brancaccio speaks with one of the students running the portfolio, Lewis Carlson, an incoming senior.