在教师准备计划中,教师质量有多大差异? 来自六个州的重新分析
Paul T von Hippel1, Laura Bellows2
1LBJ School of Public Affairs, University of Texas, 2315 Red River, Box Y, Austin, TX 78712, United States.
概括
教师准备计划 (TPP) 的问责制系统可能不值得,因为大多数TPP之间的教师质量差异可以忽略不计. 然而,特殊的TPP可能需要进一步调查它们对学生成绩的影响.
科学领域:
- 教育政策 教育政策
- 教育测量教育的测量
- 教师质量 教师质量
背景情况:
- 美国多个州正在实施基于教师对学生考试成绩增值的教师准备计划 (TPP) 的问责制系统.
- 有关用于评估TPPs的方法的统计有效性存在担忧,可能会膨胀教师质量的感知差异.
研究的目的:
- 重新分析来自美国六个州的教师附加值数据,以评估TPP之间的教师质量的实际差异.
- 确定TPP现有的问责制系统是否具有统计学上的理由.
主要方法:
- 使用新的Stata命令"毛虫",对TPP评估数据进行强有力的重新分析.
- 研究了来自纽约,路易斯安那,密苏里,华盛顿,德克萨斯州和佛罗里达州的数据.
主要成果:
- 在大多数TPP之间在教师质量方面发现了微不足道的差异 (0.01-0.03标准偏差) 在研究的各州.
- 确定统计实践可能会夸大TPP之间的差异,使问责制系统看起来比实际更有意义.
- 发现,虽然对所有TPP进行排名并不有益,但某些TPP可能有教师的教学质量明显高于或低于平均水平.
结论:
- 目前基于教师附加值的问责制系统可能无法在统计上得到证明,因为大多数TPP之间的差异可以忽略不计.
- 对被确定为异常值的特定特殊TPP进行进一步研究,可以为有效的教师准备提供宝贵的见解.
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