Item Analysis

Solve the following problem on your own: calculate the item difficulty and item discrimination.
Your class takes a writing test where the scores are distributed on a scale of 1 to 5. 1 = lowest, 5 = highest. Here are the students and their scores.
Student Number Score
1 4
2 4
3 2
4 5
5 5
6 1
7 3
8 2
9 4
10 2
Use Item Analysis for Constructed-Response Items to calculate: (Top Group is top 3 scores, Bottom Group is bottom 3 scores)
Once you have completed the analysis, construct a brief 2-3 page paper OR a 5-7 minute podcast/audio recording in APA format (2-3 page requirement does not include your title page or reference page) and address the following:

1. Describe and discuss the importance of item difficulty and item discrimination index. As a classroom teacher, what do these indexes mean to you?
2. Analyze whether you think this was a good test in terms of these results.
3. Identify questions or comments this raises for assessments used in your classroom (this also includes assessments required by the state that are administered in your classroom)

Sample Solution