The purpose of this research was to investigate the effective factors on attitude of parents that have slow learning children in regular schools toward educational integration. 204 available parents in Arak were used (all of parents that have slow learning child). In this correlational research, questionnaire of assessing attitude was prepared by researchers. Researchers used the statistical parameters such as regression analysis for analyzing data. Results showed that the attitude of the parents was positive toward educational integration. The relation between parents’ attitude and their age, the number of children's friends, and their academic grade was significant. Parents were dissatisfied with poor facilities in classrooms and school size. They approve teachers' supportive and sympatric relation with their children. So regression analysis showed that relation of other variables with parents’ attitude was not significant. The other results are presented in the article.