Complexity Theory and the Dynamics of School Climate Change: A Systemic Educational Psychology Study in Nigerian Secondary Schools

This study applies complexity theory to examine the dynamics of school climate change processes in Nigerian secondary schools, advancing a systemic educational psychology framework that moves beyond linear models of school improvement. School climate, encompassing the social, emotional, and learning dimensions of the school environment, is a robust predictor of student and staff outcomes, yet interventions to improve school climate frequently fail to account for the nonlinear, recursive, and emergent properties of school organisations. The study employs a longitudinal embedded case study design, conducting intensive systemic analysis across six secondary schools in Abuja, Port Harcourt, and Kano over two academic years. Data sources include 480 student and 120 teacher questionnaires administered at four time points, 60 semi-structured interviews, ethnographic field observation protocols, and administrative records. Complexity-informed analytic approaches including agent-based modelling, network analysis, and dynamic systems methods are applied to identify attractor states, tipping points, and feedback loops in school climate trajectories. Results reveal that school climate change is characterised by nonlinear phase transitions, with small-scale relational disruptions or catalytic leadership actions capable of triggering disproportionate climate shifts. Diversity in staff opinions, rather than consensus, predicts faster school climate adaptation. These findings challenge linear improvement models and call for complexity-sensitive approaches to school climate intervention that build adaptive capacity rather than prescriptive compliance. This study makes a methodological and theoretical contribution to systemic educational psychology in Nigeria and Africa. Keywords: complexity theory, school climate, systems thinking, secondary schools, educational psychology.