The Create Performance Task (guided)

The Create Performance Task

• You develop your own program for a purpose you can explain. The AP Digital Portfolio receives program code, a video, and your Personalized Project Reference (PPR). Written responses are completed on the AP exam.
• This lesson is practice, not AP scoring or submission approval. Use the current College Board student handouts; do not submit this supplied example as your own student-developed code.

What the program needs

• Include input from a user, device, online data stream or file, and output based on that input. A list must help manage complexity, not merely appear in the code.
• Your selected student-developed procedure needs a parameter that affects its work and an algorithm with sequencing, selection and iteration in its body. Show a call to that procedure.

Keep the algorithm inside the procedure

• In report_for(scores), the count starts at zero (sequencing), a loop visits the scores (iteration), and if chooses which scores count (selection).
• grade_for(score) is a useful helper. It has selection but no loop, so it alone does not meet the selected procedure's algorithm requirement.

A complete practice example

• Type whole-number scores from 0 to 100, separated by spaces, such as 72 95 58 88 40 67. This is real user input; the procedure returns a summary based on the list.
• Try another list and explain how its contents change the result. This teacher-provided example demonstrates the structure; your assessed work must meet the authorship rules.

def grade_for(score):
    if score >= 90:
        return "A"
    elif score >= 70:
        return "B"
    elif score >= 50:
        return "C"
    return "F"

def report_for(scores):
    pass_count = 0
    for score in scores:
        if grade_for(score) != "F":
            pass_count += 1
    return pass_count

try:
    scores = [int(part) for part in input("Scores: ").split()]
    if not scores or any(score < 0 or score > 100 for score in scores):
        print("Enter one or more whole scores from 0 to 100.")
    else:
        pass_count = report_for(scores)
        print(f"{pass_count} out of {len(scores)} passed")
except ValueError:
    print("Enter whole numbers separated by spaces.")

Test the boundaries

• The pass boundary is 50: report_for([49, 50, 51]) returns 2. A different list length must work too; the function must not return a memorised count.
• The helper accepts an empty list and returns zero. The interactive program asks for at least one score because an empty class summary is not useful here.

Explain your choices

• Purpose and list: What does your program do? How does storing related values together make it simpler to develop or maintain than separate variables?
• Procedure and algorithm: How does the parameter affect the result? Point to sequencing, selection and iteration inside your selected procedure, then explain a test that exercises a different path.

Prepare the right evidence

• The PPR includes selected list/procedure code segments and a procedure call. It is created independently and must not include comments or course content. Follow the official instructions for each submission component.
• Program-code attribution and PPR presentation have different rules. A practice program, this site's check, or a copied scaffold does not certify your final AP submission.

Practice below

• The first task uses fixed example data to practise grade_for and report_for; it is not a full Create submission. The second practises a loop that finds a maximum in a nonempty list.
• Check answer tests these practice functions. Review the current official handouts and be ready to explain your own program on the exam.