Introduction: The tests to evaluate the development of a child have the purpose of monitoring their achievements according to their age, and to ensure their effective eval-uation, adequate training must be provided to health personnel. Objectives: Obtain evidence of validity of content of the protocol of application of psychomotor development tests, regarding the relevance and clarity of the indicators. Methods: The protocol was constructed after reviewing the literature, systematizing experiences and interviews with nurses dedicated to the evaluation of child development. After fulfilling professional and pragmatic competence criteria, 10 nurses were selected. The results were quantified using the content validity coefficient V and asymmetric confidence intervals; Previously, the homogeneity of the judges' grades was verified. Results: The judges showed pre-dominantly homogeneous grades. The indicators were evaluated favourably by the judg-es, regarding the relevance and clarity of their content; The coefficients were generally high (> 0.70). A couple of items had marginal validity, but it was associated with the way nurses apply the assessments. Conclusions: The developed protocol obtained satis-factory evidence of the relevance and clarity of its indicators, fulfilling the criterion of evidence of content validity.