Abstract: A fence post leveling bracket assembly and system and method for use of the same are disclosed. In one embodiment of the vertically supporting assembly, an upper fence post bracket and a lower fence post bracket having a reference placement where an upper base plate of the upper fence post bracket is parallel to a lower base plate of the lower fence post bracket. The upper fence post bracket and the lower fence post bracket also have deviated placements where the upper base plate is nonparallel to the lower base plate. In both the reference placement and the deviated placements, adjustable vertical drift rods span a cavity between the upper base plate and the lower base plate. Lean in a fence may be corrected by selectively adjusting the adjustable vertical drift rods.