试题难度是在所有测验质量指标中最为大众关注的指标。尽管大家知道“水涨船高”的道理,但是每年高考后媒体、家长和考生谈论最多、最敏感的话题还是试题的难度。试题难度可能是社会对高考试题最直接的感性认知。另一方面,从测量学角度来看,一份能有效达到测试目的的试卷往往与难度有较大的关系,试题难度与测验最重要的指标如区分度、信度和效度等密切相 The difficulty of the test questions is the most common concern in all test quality indicators. Although we all know the truth of “rising”, but the media, parents and candidates after the annual college entrance examination most talked about, the most sensitive topic or the difficulty of the test. The difficulty of the questions may be the most direct perceptual cognition of the college entrance examination questions. On the other hand, from the measurement point of view, a test paper that can effectively achieve the test purpose often has a greater relationship with the difficulty. The difficulty of the test item is closely related to the most important test indicators such as discrimination, reliability and validity