The purpose of this study is to develop and validate the Writing Assessment Literacy Inventory (WALI) for the English primary school teachers focusing on three constructs which are practices, belief, and knowledge. The items of the instrument were mainly adapted based on the original instrument by Crusan et al., (2016) and input from literature in order to best suit the Malaysian context. This study used quantitative research approach using Rasch model in the data analysis. The draft instrument containing 56 items of original WALI was administered to 40 primary schools teachers for pilot study in order to measure the validity and reliability of this instrument. Based on the results of the pilot study, five items were removed from the original instrument. The real study involved 214 primary school English teachers from 32 schools in the district of Kinta Utara selected through simple random sampling technique. Rasch Measurement analysis was used to obtain important informati.....

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