What is graduating highest academic average for college?

There isn't a single, universally defined "highest academic average" for graduating college. It depends on the institution's grading scale and whether they use a GPA (Grade Point Average) or another system.

* GPA Scales: Most colleges in the US use a 4.0 scale, where a 4.0 represents the highest possible grade. Some might use a weighted GPA system that gives higher value to advanced placement or honors courses.

* Other Systems: Some institutions might use a percentage-based system, letter grade systems with different interpretations, or other variations. A "highest" average would then be the top possible grade within that system.

Therefore, the answer is a perfect score within the specific grading system of a given college. This could be a 4.0 GPA, 100%, or another equivalent top mark.