Current research aims to clarify the effective factors of hidden curriculum of schools o the establishment of the general goals of religious education in elementary period.This research is practical in regard to classification of the researches on the base of purpose and approaches the issue in phenomenological manner.Statistical population of the research includes all the principals, teachers and boy students of fifth and sixth grades of elementary schools in Ahvaz city and the samples of the research are selected through purposive sampling.Data are gathered through unstructured interview conducted by means of open answer questions and have been continued as much as saturation of the data.Grounded theory procedure or theory derived from data is used to analyze the data and to achieve intended model (theory) of the research and it includes four stages: 1-Coding 2-conceptualizing 3-Categorizing 4-Compiling the theory (model) of findings : In the next stage, 15 concepts of these codes are extracted and in the third stage, the mentioned concepts are organized in form of 5 categories(factor) : cognitive environment , social environment, physical environment, administrative environment, religious environment, and in the last stage, research theory (model) is formed on the base of discovered categories