Daniel Wesley knew as soon as he started applying to business school that he wanted to avoid student loans, BusinessWeek reports. He’d already racked up about $45,000 in loans from his undergraduate days and didn’t relish the idea of adding another $200,000 or so to that debt load, he says. When he found out he got into the Weekend MBA program at the University of Chicago’s Booth School of Business (Booth Part-Time MBA Profile), he turned to his mother and father, a retired construction foreman, for help. They agreed to pay for his first year of school, which he just completed, and plan to pay for his second year as well…