PT. OF GPA stands for 'Point of Grade Point Average'. Grade Point Average (GPA) is a system used to measure academic achievement in the United States and other countries. It is calculated by taking the average of all grades earned in a given period of time, usually a semester or year. The GPA is expressed as a number on a scale from 0 to 4.0, with 4.0 being the highest possible score. The average GPA for college students is typically around 3.0. PT. OF GPA is an abbreviation for the point of the GPA, which is the numerical value assigned to each grade earned.