baseline schedule

The baseline schedule is a fixed project schedule.

It is the standard by which project performance is measured.

The current schedule is copied into the baseline.

SOURCE: welcom.com

A fixed project schedule that is the standard by which project performance is measured.

The current schedule is frozen after formal approval until it is formally modified through the change control process as the result of a significant change.

When formally changed, the current baseline becomes invalid and should not be compared with the new schedule.

SOURCE: apm.com