Comprehensive evaluation is a critical first step in developing appropriate individualized education plans for students with visual impairments and additional disabilities. This study was conducted to investigate developmental level of students with visual and additional impairments by using the developmental scale. As a developmental instrument, the Callier-Azusa Scale G was used to evaluate developmental level of 23 students, aged 12 to 33, who studied in the A School for the Blind. The results of this study are as follows. First, the participants acquired 121 out of 262 development skills on the Callier-Azusa scale, showing a performance level of about 46%. In five developmental areas, 40-52% level of development skills performance was shown. Second, the distribution of students with visual and additional impairments by age group who performed the developmental skills of sub-component of the Scale was different. The lowest level of development skills performed by the participants was 1-5 months, while the highest level of 36-47 months. Given the above results, evaluation process through developmental scale is used to gather useful information in planning and implementing individualized education plans for learners with visual impairments and additional disabilities.