Abstract: An adjustable step ladder system including an adjustable step ladder assembly. The adjustable step ladder assembly includes a front-assembly, a rear-assembly, a top-unit, and a tray-unit in functional and structural combination. The front-assembly includes two front-legs, a plurality of rungs, and two front-feet in functional and structural combination. The rear-assembly includes two upper-legs, a center-section, two lower-legs, and two rear-feet in functional and structural combination. The tray-unit includes a tray, and two tracks in a preferred embodiment. The plurality of rungs are affixed between and to each of the front-legs such that the plurality of rungs provides a user with a secure step to climb the adjustable step ladder assembly.