* School district: Wealthier districts often have higher average GPAs than poorer districts due to factors like funding, resources, and teacher quality.
* School type: Some public schools specialize in certain areas (e.g., arts, STEM) and may have different grade distributions than more general schools.
* State/country: Grading scales and standards vary significantly across states and countries.
* Grade level: Grade distributions differ across elementary, middle, and high school.
* Subject: Students might excel in some subjects and struggle in others.
* Individual student factors: Student motivation, learning disabilities, home environment, and socioeconomic status all play a role.
While some overall statistics on GPA averages might exist at the state or national level, these are broad generalizations and don't reflect the diverse reality of individual student performance in public schools. You'd need to look at specific school or district data for a more accurate picture.