有，会统计一个难度系数

试卷有难易，但是没有一个具体数值说是多少，试题才有难度和难度系数。

不知道你在哪地方看到的试卷有难度系数？

能将irt广泛应用于实践，那么这个版块的人气就旺盛了

对。一直在努力中，一起努力。目前学的人不多。

IRT is being emphasized and concerned rapidly not only in psychometric and education measurement (not limited to survey and scale development, assessment and evaluation), but also in other disciplines - likes health science, human resource management, organizational management and even the traditional social science subjects.  Many audience in this forum are interested, more effort of us in learning and teaching activities willl be in great help.  Here is a two cent of my opinion. Thanks.