ABSTRACTObjective:To construct and validate the content and appearance of an information booklet to promote self-efficacy of parents and/or caregivers in childhood asthma management and control.Method:This is a methodological study, developed from educational material elaboration, validity and assessment by 25 content judges and three technical judges. Language clarity, practical pertinence and theoretical relevance were used, calculating the Content Validity Coefficient (CVC) for validity, and the Suitability Assessment of Materials (SAM) instrument was applied for assessment. Judges were also able to make suggestions for modifications on each page of the booklet. Pages that reached a CVC ≥ 0.80 for content judges and CVC ≥ 0.70 for technical judges were considered validated.Results:The total CVC of the booklet was 0.96 for content judges and 0.83 for technical judges. The educational material was considered superior according to the SAM, with a total score of 92.67% for content judges and 73.81% for technical judges. Changes were made to the booklet after the validity process, according to judges’ suggestions, resulting in a second version.Conclusion:The information booklet is valid and has a high degree of recommendation for use with parents and/or caregivers in childhood asthma control and management.