McALLEN - “I am a 45-year-old college student,” declares Lisa Castillo-Salinas proudly. The South Texas College learner is living proof that it’s never too late to earn a degree. A successful senior marketing manager at T-Mobile and a mother of two, the STC returnee is finally set to earn her Bachelor of Applied Science in Organizational Leadership… after putting the pause on college for over two decades. “I’m one of those that always thought that I didn’t need school because I had done it for a very long time on my own,” says Castillo-Salinas. “The sad reality is I really needed school.