Comparison of Grade Replacement and Weighted Averages for Second-Chance Exams

Comparison of Grade Replacement and Weighted Averages for Second-Chance Exams
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第二次机会考试的成绩替换和加权平均数比较

DOI:
10.1145/3372782.3406260
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发表时间:
2020
期刊:
Proceedings of the 2020 ACM Conference on International Computing Education Research
影响因子:
--
通讯作者:
West, Matthew
West, Matthew
中科院分区:
--
文献类型:
--
作者:
Herman, Geoffrey L.;Cai, Zhouxiang;Bretl, Timothy;Zilles, Craig;West, Matthew

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我们探讨了在提供第二次考试机会时课程政策如何影响学生的学习和学习。尽管有令人信服的证据表明掌握学习等其他评估范式可以改善学生的学习,但高风险的一次性考试仍然是评估学生 STEM 知识的事实上的标准。不幸的是,掌握学习的实施成本可能很高。我们探索使用可选的第二次机会测试来持续获得大规模掌握学习的好处。先前的研究表明,课程政策会影响学生的学习和学习,但没有在相同的课程背景下比较这些影响。我们在一门课程中进行了一项准实验研究,以比较两种评分政策对第二次考试的效果以及增加参加异步考试的学生日期范围的效果。第一个评分政策称为 90-cap,允许学生选择参加第二次机会考试,该考试将完全取代他们在第一次机会考试中的分数,但第二次机会考试的学分上限为 90%。第二个评分政策称为 90-10,将学生的第一次和第二次机会考试成绩合并为加权平均值(90% 最高分数 + 10% 最低分数)。 90-10 政策显着增加了能力稍差的学生参加第二次考试的可能性。此外,我们的数据表明,学生在 90-10 政策下学到了更多知识,从而在教师无需支付任何费用的情况下提高了学生的学习成果。大多数学生都会在考试有效的最后一天参加考试,无论考试有多少天。
We explore how course policies affect students' studying and learning when a second-chance exam is offered. High-stakes, one-off exams remain a de facto standard for assessing student knowledge in STEM, despite compelling evidence that other assessment paradigms such as mastery learning can improve student learning. Unfortunately, mastery learning can be costly to implement. We explore the use of optional second-chance testing to sustainably reap the benefits of mastery-based learning at scale. Prior work has shown that course policies affect students' studying and learning but have not compared these effects within the same course context. We conducted a quasi-experimental study in a single course to compare the effect of two grading policies for second-chance exams and the effect of increasing the size of the range of dates for students taking asynchronous exams. The first grading policy, called 90-cap, allowed students to optionally take a second-chance exam that would fully replace their score on a first-chance exam except the second-chance exam would be capped at 90% credit. The second grading policy, called 90-10, combined students' first- and second-chance exam scores as a weighted average (90% max score + 10% min score). The 90-10 policy significantly increased the likelihood that marginally competent students would take the second-chance exam. Further, our data suggests that students learned more under the 90-10 policy, providing improved student learning outcomes at no cost to the instructor. Most students took exams on the last day an exam was available, regardless of how many days the exam was available.
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DOI: --
发表时间: 2019
期刊: International Conference on Computer Supported Education
影响因子: --
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