A positionable vehicle partition system includes at least two rails, a substantially planar partition for separating a vehicle area into at least two sections, a slide assembly to facilitate movement of the partition relative to the rails, and a latch for retaining the partition in a selected position relative to the rails. The rails are configured to be mountable in a spaced apart parallel relationship. The slide assembly includes at least a stationary slide member affixed to or defined by each of the rails, and at least one movable slide member extending away from and directly or indirectly affixed to the partition.