Table 1.

Search string.

Related Topics	Search Keywords and Their Alternatives
T1 (intervention)	“Challenges” OR “barriers” OR “problems” OR “obstacles” OR “hurdles” OR “difficulties” OR “impediments” OR “hindrance”
T2 (population)	“School administration” OR “leadership” OR “school principals” OR “school management” OR “role of school heads”
T3 (institution)	“School education department” OR “SED” OR “school administration” OR “public school management” OR “principals’ role in quality management”
T4 (experimental)	“Case studies” OR “empirical studies” OR “theoretical studies” OR “quantitative surveys” OR “Qualitative surveys” OR “Mixed method surveys”
Final Search String = (T1) and (T2) and (T3) and (T4)