en Educational Psychology پژوهشي Original <div style="text-align: justify;"><span style="color:#339933;"><span style="font-size:14px;"><span style="font-family:Times New Roman;"><span style="line-height:2;"><b>Objective</b>: The primary objective of this research endeavor was to examine the efficacy of a sex education program in enhancing the body-esteem of young students in elementary school.<br> <b>Methods</b>: This study adopted an experimental approach, employing a pre-test-post-test design with a control group. The statistical population encompassed all girls attending primary schools in Shiraz during the academic year of 2021. Through random sampling, a total of 30 female students were selected, divided equally into an experimental group and a control group, comprising 15 students each. To assess body-esteem, the Body-Esteem Scale (Franzoi & Shields, 1984) was utilized.<br> <b>Results</b>: The results of the covariance analysis revealed that the F statistic for the body-esteem variable attained a significant level of 0.001. This finding indicates that the implementation of the sex education package for elementary school children has exerted a positive and significant impact on their body-esteem.<br> <b>Conclusions</b>: In summary, the outcomes of this study underscore the efficacy of sex education in terms of its influence on the emotional and affective outputs in primary school students<b><span dir="RTL" lang="FA">.</span><span style="line-height:150%"></span></b></span></span></span></span></div> Sex education, Body-esteem, Elementary school, Female Students 56 70 http://ijer.hormozgan.ac.ir/browse.php?a_code=A-10-94-1&slc_lang=en&sid=1 Hamideh Zahedi hzahedi80@yahoo.com 10031947532846002785 0009-0003-5336-3534 No Department of Educational Psychology, Marvdasht Branch, Islamic Azad University , Marvdasht, Iran. AmirHoshang mehryar ahmehryar2003@yahoo.com 10031947532846002786 10031947532846002786 Yes Department of Psychology, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran. Nadereh Sohrabi nadereh_sohrabi@miau.ac.ir 10031947532846002787 10031947532846002787 No Department of Psychology, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran. Maryam Zarnaghash mzarnaghash@miau.ac.ir 10031947532846002788 10031947532846002788 No Department of Psychology, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran.