The minimum score required to attend Qingdao No.6 High School is typically around 590-620 on the Gaokao, China's national college entrance examination. This score is based on the average acceptance threshold for the past few years, which has seen a slight increase due to the school's growing reputation and competitiveness. Qingdao No.6 High School is known for its rigorous academic standards and excellent educational facilities, which attract a high number of applicants each year. The score can vary slightly depending on the specific year and the difficulty of the Gaokao, but the range mentioned provides a general guideline for prospective students.