There is a proliferating research interest in emotional intelligence (EI) as it plays a significant role in learning processes. The chapter reports a study on the relationship between EI and the willingness to communicate (WTC) in the foreign language studied in secondary school (English). A positive correlation between both factors would be very significant since the use of the language of study is essential in the learning process. To assess the existence of this relationship, the questionnaires of 119 CSE students were analysed, and it was concluded that there is a statistically significant correlation between EI and the WTC. The general objective is, on the one hand, to analyse the relationship between emotional intelligence and the willingness to communicate in the Foreign Language (English) class at the secondary education stage, and whether there is a relationship between emotional intelligence, the willingness to communicate, and class participation.