Just from the top of my head, SKY (SNU, Korea, Yonsei) have pretty significant grade inflation -- probably not as bad as Harvard -- and a cursory Google search supports that.

Back to US schools, I'd like to see some analysis on the correlation between the proportion of # of GE courses for a program and that program's grade inflation levels. Also, compare public vs private schools' grade inflation. Schools in general have a strong incentive to send their students to internships and post-grad programs at prestigious IB firms, consulting firms, law schools, grad schools, and etc; and I wouldn't be surprised if private schools tend to have more lenient policies in relation to grade inflation to boost that goal.

(edit: grammar)