539 to 6 10 or less. According to official website of Chongqing Education Bureau, as of July 2023 12, the grade of Grade Two in Jiulongpo District is as follows: A 1-A5 corresponding score: A 1: 758 above, A2: 72 1: 758 below and A3: 684-7265438 below. The fraction corresponding to B 1-B5: below B 1: 539-6 10; B2: 468 is less than 539; B3: 438 is less than 468; B4: 423 to less than 438; B5: 390 is less than 423. Therefore, the grade of grade b 1 in grade two in Jiulongpo District is below 539-6 10. Jiulongpo District, which belongs to Chongqing, is located in the west of the main city of Chongqing, with a total area of 432 square kilometers. 202 1 permanent population in Jiulongpo District 152900, with a total registered population of 994600.