Assigning grades


You are given a dataframe (called df) of students, and you need to assign grades to each student. The table schema is as follows:

Column name Data type Example value Description
student_name string Cindy Chu Name of student
student_id integer 1837204 Unique id for each student
class string Biology Name of class
final_grade_pct integer 80 final grade for class represented in percent

You need to assign the following letter grades based on final_grade_pct in a new column named "final_grade_letter":

  • 90 - A

  • 81-90 - B
  • 71-80 - C
  • <70 - D

Write a function using Python to loop through the table and assign the appropriate letter grades to each student, adding a new column to the existing dataframe, df.


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