This study, which is part of a broader research project, aims to investigate the impact of the initial training received by students in the Master's Degree in Secondary Education and Baccalaureate, Vocational Training, and Language Teaching (MDSE) on their future teaching development in the current educational and social framework. The main goal is to understand their concerns, attitudes, and level of acquired competencies and knowledge for their professional development as inclusive teachers. Additionally, the study aims to explore the relationship between their assessments and experiences with the perceived level of Emotional Intelligence (EI), given its importance as a facilitating element, which is teachable from formal education, in socio-educational inclusion processes and quality attention to diversity in classrooms. A total of 218 MDSE students (Mage = 31.5; SD = 6; males = 33%; females = 67%) participated in the study, coming from various Spanish universities, and having either completed their studies or being in the final stages after having completed the generic module and practices in secondary education centers. The information was collected through the "Teacher Training in Secondary Education: Key Elements for Teaching in an Inclusive School for All" (TTSE-IN) questionnaire, which included five validated and relevant instruments, of which three were used for the study's purpose (Questionnaire for Future Secondary Education Teachers about Perceptions of Diversity Attention, Scale of Feelings, Attitudes, and Concerns about Inclusive Education, Revised SACIE-R and Wong and Law Emotional Intelligence Scale WLEIS-S). The main results indicate that future teachers show a positive attitude towards diversity but have significant training gaps. Additionally, the EI variable, along with regular contact with people in situations of special vulnerability and experience in teaching people in situations of special vulnerability in non-formal contexts, has a positive effect on both teacher well-being and the facilitation of inclusive education processes and diversity attention.
