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Project Management & Agile · Foundational

Schedule Performance Index (SPI)

Measure of schedule efficiency: SPI = EV / PV.

Definition

SPI below 1.0 means less work done than planned. Like SV, dollar-based SPI trends toward 1.0 near project completion.

Example

EV $30k / PV $40k = SPI 0.75.

Exam tip

SPI tells you the rate of progress relative to plan.

Related terms