Introduction: emotional skills are associated with feelings and/or perception of the elements and relationships of reality or imagination, which is expressed through physiological reactions such as changes in breathing, sweating, increased heart rate, and includes some behavioral reactions such as relaxation, well-being, anxiety, depression, aggressiveness or crying.Objective: design, development and validation of a questionnaire to assess emotional skills, such as: emotion recognition, behavioral and cognitive self-regulation of emotions, interpersonal relationships and interpersonal sensitivity; for schoolchildren attending official schools in the Iztacalco Delegation of Mexico City.Material and methods: this is a descriptive-cross-sectional research study, in the construction and validation of the questionnaire a test-validation design has been used, according to which the instrument has been applied, in the pilot study to 150 schoolchildren and has been submitted to expert judgment, to be applied to a sample of students representative of the population aged 7 to 12 years.The questionnaire (QESSC) consists of 40 items organized into four factors: 1. Recognition of emotions, 2. Behavioral and cognitive regulation of emotions, 3. Interpersonal relationships, and 4. interpersonal sensitivity.Results: in order to validate the questionnaire, it was applied to a sample of 150 subjects.The sample had a mean and standard deviation of 9.1 ± 1.6 (SD).Construct, criterion, appearance and content validation was performed.Cronbach's alpha of the total scale was 0.82 with a variance explanation of 72.5%.Factor 1: recognition of emotions (10 items, α = 0.82), factor 2: behavioral and cognitive self-regulation of emotions (10 items, α = 0.81), factor 3: interpersonal relationships (10 items, α = 0.85), factor 4: interpersonal sensitivity (10 items, α = 0.87).The Mesquite questionnaire was used as a gold standard and correlations were observed between emotion recognition and moderate emotional intelligence (7-15) (r = 0.753) p < 0.01) behavioral and cognitive self-regulation of emotions and high emotional intelligence (15-25) (r = 0.751) (p < 0.01).Interpersonal sensitivity and moderate interpersonal intelligence (7-15) (r = 0.791 p < 0.01) test-retest correlations on the total scale items ranged from r = 0.76 to r = 0.82.Conclusion: CHENE is a questionnaire that allows the assessment of emotional skills in school-age children.The validity and reliability of the CHENE were established.The goodness of this questionnaire is supported by the empirical data achieved both in reliability and validity.According to the statistical analysis, it is observed that in general the CHENE questionnaire has a good correlation between the different fields proposed.In relation to the Mesquite questionnaire (gold standard) it presents a positive and significant correlation.