Universal screening is the first mechanism by which students are identified as at risk of failure in the context of multitiered systems of supports. This study examined the validity and diagnostic accuracy of a reading computer-adaptive test as a screener to identify state achievement test performance for third through fifth graders (N = 1,696). Single time points and slopes within year and longitudinally were examined. Validity results for single points were moderate (.60–.79, p < .002). Validity for slopes and the state test were weak or not significant. Diagnostic accuracy cut scores that maximized sensitivity and specificity yielded high accuracy for single points whereas sensitivity was inadequate for slopes. Practical implications and future directions are presented.

中文翻译：

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阅读计算机自适应测试的长期有效性和诊断准确性

在多层次支持系统的背景下，普遍筛选是第一个将学生识别为有失败风险的机制。本研究检查了阅读计算机自适应测试作为筛选器的有效性和诊断准确性，以确定三年级至五年级学生的状态成就测试表现 (N = 1,696)。检查了一年内和纵向的单个时间点和斜率。单点的有效性结果中等（.60–.79，p < .002）。斜率和状态测试的有效性很弱或不显着。最大限度地提高灵敏度和特异性的诊断准确度得分对单点产生了高准确度，而对斜率的敏感性不足。提出了实际意义和未来方向。