You are the project manager of the NHA Project. This project is expected to last one year with
quarterly milestones throughout the year. Your project is supposed to be at the third milestone
today but you’re likely only 60 percent complete. Your project has a BAC of $745,000 and you’ve
spent $440,000 of the budget-to-date. What is your schedule performance index for this project?

A.
80

B.
1.02

C.
102

D.
0.80

Explanation:
The schedule performance index can be found by dividing the earned value by the planned value.
In this project, it’s $447,000 divided by the $558,750 for a value of 0.80. Schedule performance
index (SPI) is the measure of schedule efficiency on a project. It is used in trend analysis to predict
future performance.
SPI is the ratio of earned value to planned value. The SPI is calculated based on the following
formula:
SPI = Earned Value (EV) / Planned Value (PV)
If the SPI value is greater than 1, it indicates better than expected performance, whereas if the
value is less than 1, it shows poor performance. The SPI value of 1 indicates that the project is
right on target.
Answer option A is incorrect. “80” is not the same value as “.80”.
Answer option B is incorrect. 1.02 is the cost performance index.
Answer option C is incorrect. 102 is not a valid calculation for this question.