The purpose of this research is to review the literature regarding (1) the design of sustainable competency development in the 21st century for teachers, (2) sustainable competency subconstruct design from the perspective of tactical operation, (3) sustainable competency subconstruct design from the perspective strategic operation, (4) construct school readiness in the educational process. The exclusion carried out by this article is reviewed in terms of abstract and research results. Literature Research is limited to empirical articles or research for ten years (2012-2022), and the main book of a theory is not subject to limitations. Two hundred sixty-nine articles were collected, and the inclusion and exclusion criteria were implemented, totaling 84 articles. The results of this study are (1) the design of sustainable competency development consists of two main constructs, namely tactical dan strategic operation, (2) constructs of school readiness obtained by researchers include literacy knowledge and skills, science knowledge and skills, approaches to learning, (3) sustainable competence is considered capable of increasing school readiness in carrying out the educational process following the 4.0 era, and (4) through the development of sustainable competence the PISA ranking can be restored in stages. [For the full proceedings, see ED654100.]