GPA (Grade Point Average) and Class Rank are two primary academic metrics used by high schools and colleges to evaluate a student's performance. While they are often related, they provide different insights: GPA is an absolute measure of your grades, whereas class rank is a relative measure of how your grades compare with those of your peers.

Here is a detailed breakdown:

1. GPA (Grade Point Average)
GPA is a numerical summary of a student's academic performance, typically calculated at the end of each semester or school year.

• Calculation: GPA is found by dividing the total grade points earned by the total credit hours attempted.
• 4.0 Scale: Generally, an A=4.0, B=3.0, C=2.0, D=1.0, F=0.0.
• Unweighted GPA: Treats all classes equally, usually on a 0 to 4.0 scale. It does not account for class difficulty.
• Weighted GPA: Gives more weight to challenging courses (AP, Honors, IB, Dual-Credit). An "A" in an AP class might be worth 5.0, while an "A" in a regular class is 4.0.
• Cumulative GPA: The average of all grades earned from 9th grade to the present.
  
  2. Class Rank
  Class rank is a student’s numerical standing among their classmates based on their cumulative GPA.
   
• How it works: Students are ranked by GPA from highest to lowest. The student with the highest GPA is #1 (often valedictorian).
• Contextual Value: It helps colleges understand a student's performance relative to their school's grading standards, as some schools are stricter than others.
• Top 10%: In some states, particularly Texas, being in the top 10% of your class guarantees automatic admission to public universities.
• Class Percentile/Quartile: If not an exact number (e.g., 5th in a class of 100), it may be reported as a percentile (e.g., top 5%) or quartile (e.g., top 25%).