Are you being misled by your progress Gantt chart?
Most scheduling software includes a feature that can be used to display the progress of a project, often in the form of a Gantt chart. This article argues that it is a mistake to interpret a Gantt chart progress bar as an indication of whether the project is behind or ahead of schedule and offers several solutions which involve the use of earned value information to display not only the progress of activities but also schedule status compared to the target or plan. Calculating the Schedule Performance Index (SPI) and applying it to activity end-dates can provide a clearer picture of project progress. Using these methods will provide managers with a more objective picture of the progress of a project or any WBS-defined portion of it.