Yeah, female MMA champion Miesha Tate did graduate from highschool. In fact, she went to Central Washington University, which is where she first discovered her love for MMA.
During highschool, she was the first girl to make the wrestling team, and this was before Washington State even had girls wrestling as an option for highschoolers!
You can actually read a pretty awesome biography over her career and how she overcame loads of difficulties growing up, through highschool and professionally right here: http://bleacherreport.com/articles/1899195-miesha-tate-barbie-dolls-and-bloodshed
