I'm not knowledgeable on what I'm about to say so just jump in if I'm off base.
Schools like SMU have been graduating students for decades with degrees that usually result in high paying jobs, with many becoming Corporate leaders of major corporations. Engineering, Medicine, etc. They have been producing graduates in these fields for decades. These people make big money! And when these money makers become CEO's, or some other high paying job, they make more money. I personally know an SMU graduate that played ball for SMU, then became a big time executive with a global oil company. He's got more money than God! Sure, he probably started his first job in Siberia for some oil company, but that's what they do.