Also called SPISchedule Performance Index More. A measure of scheduleSee project schedule and see also schedule model. The timing... More efficiency on a projectA temporary endeavour undertaken to create a unique product,... More. It is the ratio of earned valueAlso EV. The value of work performed expressed in terms of t... More (EVEarned Value More) to planned valueAlso called PV. The authorized budget assigned to the schedu... More (PVPlanned Value More). The SPISchedule Performance Index More = EVEarned Value More divided by PVPlanned Value More.