A staff study (SS) is an administrative tool used for decision-making, involving comprehensive data gathering and analysis to resolve issues. Particularly crucial in military settings where classified information limits resources, staff studies also demonstrate their value in interdisciplinary academic fields. This article emphasizes the significance of SS in education policy by exploring their application in developing English testing within the Royal Thai Navy (RTN). While staff studies share similarities with applied research in language education, their primary emphasis is on applying knowledge to solve problems in specific contexts. Staff study principles provide a logical framework for navigating contextual variables in problem-solving, rather than expanding knowledge. Overall, SSs offer innovative approaches to addressing unique challenges across various research contexts.