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The aim of the present study was to Psychometric Properties the Reynolds Intellectual Assessment Scales, Second Edition in students of Tehran's Sampad School in the academic year of 2017-2018, which provided a standard tool for measuring gifted children and adolescents. after the adaptation process and psychometric analyzes in the context of the Pilot version with a sample size of 30 students, a review was carried out and a Try-Out Edition version was developed. The analyzes related to the index of difficulty, clean index and other psychometric properties were carried out with a sample size of 120 students and resulted in the development of a standard version. In line with the standardization process with a sample size of 704,it was found that all questions had a suitable difficulty index and they were identified by Cronbach's alpha in terms of internal consistency coefficient and test-retest method based on stability coefficient. The coefficients of credit are more than 80%, and the tool has internal consistency and stability. Also, according to the criteria of the new version of the Tehran-Stanford-Binet Investigations Exploration, it was determined that the instrument has a criterion validity Using the recommended psychometric properties and executive capabilities in a short time, the scale can be used to measure the intelligence profile of gifted students.