Courses/course Content/python/learn | AI Content & Learning

In this activity, we will build a Grade Calculator in Python. The program will ask for a student's score and use conditional statements to determine and display their letter grade.

Illustration of a report card with letter grades A, B, C, D, F written in colorful letters next to score ranges

Grading Criteria

Score Range	Grade
90 and above	A
80 – 89	B
70 – 79	C
60 – 69	D
Below 60	F

Flowchart showing the grade calculation logic with nested if-elif-else decisions checking score ranges from 90 down to 60 and assigning letter grades A through F

Writing the Script

# Grade Calculator def get_grade(score): if score >= 90: return "A" elif score >= 80: return "B" elif score >= 70: return "C" elif score >= 60: return "D" else: return "F" # Main program name = input("Enter student name: ") score = float(input("Enter score: ")) if score < 0 or score > 100: print("Invalid score. Please enter a value between 0 and 100.") else: grade = get_grade(score) print(name + " scored " + str(score) + " and received Grade: " + grade)

Testing the Program

Run with name = Ali, score = 92 → Grade: A
Run with name = Sara, score = 76 → Grade: C
Run with name = Zara, score = 55 → Grade: F
Run with score = 105 → Should display invalid score message

Python console showing four test runs of the grade calculator displaying the correct grade for each student name and score input

Save your file with the name Grade Calculator before moving on!

Activity 1: Grade Calculator

Grading Criteria

Writing the Script

Testing the Program

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