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The main question of this study is that: “what are the reference characteristics of language arts curriculum in the first-cycle of Primary School on the base of theoretical framework and the related practices of some education systems in the field of language arts curriculum and instruction”. The subsidiary question is that: “from the viewpoint of Farsi language arts practitioners and language arts curriculum experts in primary school, which of these characteristics are valid and trustworthy for applying in developing the Farsi language arts curriculum in the first-cycle of Primary School. In the first step through a descriptive inquiry and research synthesis to study the theoretical framework and related experiences and practices in a few education systems, including: Japan, some states in United States of America and Finland, the reference characteristics of language arts curriculum in the first-cycle of Primary School and its consisted components are elicited.