@PurpleTitan Each school determine the needs of the students with a different formula. In addition, need can be met by loan, grant, or other means. Most important, CMU does not guarantee need met. Indeed, only 30% of aid recipient have their needs fully met according to CollegeData.
https://admission.enrollment.cmu.edu/pages/financial-aid-faq
How can you tell if OP is upper middle class? Another asumption?