Abstract
(1) Background: Attention to diversity constitutes an aspect that influences system quality and offers a perspective of the capacity of educational centres to respond to educational needs. The present study carried out an examination of the perceptions held by secondary school teachers and the level of importance conferred by them to the variables that should be integrated into plans and will influence the degree of compliance. (2) Methods: Quantitative descriptive research was performed using a survey to collect data from teachers at schools that had a Quality Management System available. (3) Results: Interaction with families is necessary to agree upon the centre's objectives to address diversity and to define an optimisation strategy for resources in virtue of their availability within the centre. It is key to establish an appropriate teacher-student ratio to encourage compliance. (4) Conclusions: Teachers are the great pillars of quality education. Their perceptions are the route through which deficient aspects and the dimensions that must be improved when formulating these strategies can be recognised with attention to diversity.