<p>I agree with Teenmom. Those scattergrams and programs like Naviance can be very valuable in assessing a gpa from a particular high school as does other info from the high school in the success in getting into particular colleges. Given two similar colleges, if one knows and has a record of accepting more kids from a given high school. that gives you some extra information. I found this info to be quite accurate. Looking at several years worth of results, there were not many outliers in the data and they tended to be acceptances that were clearly special circumstances such as a recruited athlete or a celebrity/development potential admit.</p>