Sixth grade. According to the inquiry of Nine Little official website, there are grades one to six in the Nine Little Melissa Campus. Haikou Binhai No.9 Primary School is located at No.37 Bihai Avenue, Haidian Island, Meilan District, Haikou City, Hainan Province. It is a public primary school directly under Haikou Education Bureau, a national youth campus football school, a national excellent traditional culture teaching and research base school for primary and secondary schools, the second batch of primary and secondary school aesthetic education demonstration schools in Hainan Province, a popular science demonstration school in Hainan Province, a school-based training demonstration school in Hainan Province, and a characteristic school for marine awareness education in Hainan Province.