All schools are different. My school uses the weighted GPA scale (meaning 5.33 for A+ in an honors/AP class, 5.0 for an A, 4.66 for an A-, etc.). Here, Merit Roll is like 3.0+, Honor Roll is like 3.5+, and High Honor Roll is 4.0+. We also have something called Summa Cum Laude which is 4.3+.