Seriously, did you even read the article? No? Here, let me help you out.

To graduate Cum Laude, you must score a 3.75 GPA. This means that you have to score 3 As and one B for every 4 courses you take. A C requires 7 As to counter. A D requires 11 As. An F would require  15 As to counter. Since you only have 56 courses to work with, you have to bust your butt...

Summa Cum Laude requires a 3.9 GPA. This means that every 9 courses out of 10 must be an A, and the 10th can't be lower than a B. A C would require 19 As, and a D would require 29. You CAN manage a 3.9 with an F, but 39 out of your 56 courses must be As, and a second F would doom your chances of getting this. 

Magna Cum Laude cannot be achieved without taking Honors or AP courses. You must score a 4.1 GPA, which means that you must take 1 Honors course for every 10 classes, and score As in all of them! 

Not every tom, dick, and harry will be walking out of high school with an Honors Degree.