Sajha Bajha,

It is possible to do so. It is certainly hard but surely can be done. Your friend might be in TX working 60+ hours, like most students do and still get good grades. There are many students who attend universities, take high level classes, work a lot of hours weekly and study hard, and score good grades. It is appreciatiable but not surprising to me and a lot more here in TX. May be you want to try that also!