whai is SPi?

SPI, in Project Management Terms, is short for Schedule Performance Index. It's an indicator on whether the Project is on Schedule (SPI = 1), Ahead of Schedule (SPI > 1), or behind Schedule (SPI < 1).

In-spi-ra-tion.

SPI stands for Schedule Performance Index.

SPI is a measure of the schedule efficiency of a project calculated by dividing earned value (EV) by planned value (PV).

SPI > 1: Project Ahead of schedule

SPI = 1: Project on Schedule

SPI < 1: Project behind Schedule