The research's aim is to assess the services offered by Greek public secondary education schools, with the intention of identifying any discrepancies between students' expectations and their perceptions of the final services provided. The gaps discovered indicate that the school's educational services are not meeting student expectations in the five quality dimensions of the SERVQUAL model. To be specific, the average expectations are 4.44, perceptions are 3.11, and gaps are -1.33. The schools examined had a greater discrepancy in the dimensions measuring safety and emotional understanding, which was observed. The fact that the 5 factors are correlated with each other indicates the model's reliability. However, in relation to the independent variables of gender, age, and class, there appears to be a positive correlation across all factors, which is very weak and not statistically significant. In contrast, a low negative correlation appears to be present between only the demographics being considered. Therefore, demographic characteristics do not affect the quality of education in secondary schools. Our findings benefit decision-makers by assisting them in taking corrective actions necessary to enhance the quality of services provided by schools as part of a continuous improvement process in order to achieve a higher level of excellence. 

This study investigates the role of educational leadership in supporting student mental health and promoting equity within schools. It examines three leadership models, transformational, trauma-informed, and equity-focused leadership, and their effectiveness in fostering inclusive school environments. By synthesizing recent empirical studies, this review identifies strategies that enhance student engagement, emotional resilience, and academic performance. The findings reveal that schools with proactive leadership in mental health experience improved student well-being, reduced behavioral challenges, and higher academic success. However, barriers such as resource constraints, inconsistent policy implementation, and a lack of specialized training for school leaders hinder the full integration of mental health initiatives. These challenges disproportionately affect marginalized student populations, underscoring the need for leadership approaches that address systemic inequities in education. This review emphasizes the importance of embedding mental health within broader school policies and practices. By prioritizing psychological safety, fostering strong school-community partnerships, and ensuring equitable access to mental health resources, educational leaders can create sustainable, supportive learning environments. The study offers practical recommendations for policymakers and school administrators to strengthen leadership practices that bridge the gap between academic achievement and student well-being. This research contributes to the ongoing discourse on student mental health and equity, advocating for school environments that nurture both academic and emotional growth.

Instructional leadership is one of the central research trends in school management and leadership. The period from 2002 to 2023 marks the transition from theoretical research to practical research. This study aims to find out research trends on Instructional Leadership from 2002 to 2023, thereby finding new research directions and effective applications in the practice of Instructional Leadership associated with different school contexts at different local, national, and regional. Research directions also need to be expanded with a larger scope associated with educational innovation in the 4.0 revolution. Using the bibliometric analysis method with the support of VOSviewer software, 995 types of research consisting of journal articles, book chapters, conference papers, and books were extracted from the Scopus database. Research results show that there are differences in research on Instructional Leadership in developed and developing countries in different socio-cultural contexts. There was the most significant growth from 2015-2017 in the volume, growth trends, and regional distribution of global IL press products. Leading Authors and IL Research Journals from the US and developing countries. Empirical studies follow three main directions: a school leader with the role of Instructional leadership, scholars who have focused on different aspects of Instructional leadership, and the actions in the instructional leadership models. Instructional Leadership from 2002 to 2023 focuses on teachers as well as student activities.