Suggestion: Consider preparing for & taking the GMAT or GRE exam during the period after graduation. Test scores remain valid for 5 years.
Lots of MBA programs and Masters Degree programs offer full tuition scholarships for those with strong academic backgrounds & high GMAT /GRE scores.
Entrance into an M-7 (Harvard, Stanford, Penn-Wharton,Chicago-Booth, Northwestern-Kellogg, Columbia, & MIT) program can be a life changing experience. I also recommend Virginia-Darden & Dartmouth-Tuck.
Duke-Fuqua & Cornell-Johnson, NYU-Stern, UCal-Berkeley, Yale SOM are others to consider.