An unweighted GPA is a GPA that does not take into account the difficulty of the courses a student has taken. All courses are weighted equally, regardless of whether they are more or less challenging.
A weighted GPA is a GPA that does take into account the difficulty of the courses a student has taken. Courses that are considered more challenging are weighted more heavily, and courses that are considered less challenging are weighted less heavily.
Weighted GPAs are generally considered to be a more accurate representation of a student's academic achievement than unweighted GPAs, as they take into account the rigor of the courses a student has taken. However, weighted GPAs can also be more difficult to calculate, as they require schools to assign weights to each course.
Ultimately, the type of GPA that is used is up to the individual school or institution. Some schools use only unweighted GPAs, while others use only weighted GPAs. Still other schools use a combination of both weighted and unweighted GPAs.