Construction of Item Difficulty Model of Senior High School Academic Achievement Test
LIU Fang1**, WANG Wei-Qun2, WU Xing3
1. Jiangsu Province Education Examination Authority, Nanjing 210024, China;
2. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China;
3. College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
