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Cutoff Points Patrick Traynor, Ph.D., Director of Assessment and Evaluation Colton Joint Unified School District

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Presentation on theme: "Cutoff Points Patrick Traynor, Ph.D., Director of Assessment and Evaluation Colton Joint Unified School District"— Presentation transcript:

1 Cutoff Points Patrick Traynor, Ph.D., Director of Assessment and Evaluation Colton Joint Unified School District ACSA Conference November 2, 2006 San Diego Aligning District Assessments to STAR CST Bands

2 Original Cutoffs for ELA Semester 1 Exam 7 th Grade Band% CutoffCutoff Points 1 Far Below Basic 0% % Below Basic30% % Basic50% % Proficient70% % Advanced90% - 100%

3 Distribution of Seventh Grade Students (%) In Semester 1 Bands According to ELA CST Band Using Original Cutoffs

4 Distribution of Seventh Grade Students (#) In Semester 1 Bands According to ELA CST Band Using Current Cutoffs

5 Percentage of Kids in Each ELA CST Band Who Received Each Semester Exam Raw Score

6 From Raw Score ELA Semester 1 Grade 7 ELA CST Band NMeanStd. Dev. 5 (Advanced) (Proficient) (Basic) ( Below Basic ) ( Far Below Basic )

7 % Distribution with Means of Students within Each ELA CST Band

8 The Four Cut Points on Each Exam Should –Separate the students into five corresponding bands Far Below Basic Below BasicBasicProficientAdvanced – Optimize % of students who scored in a particular ELA band within their corresponding semester exam band – For example,...

9 % Distribution with Means of Students within Each ELA CST Band Cut point maximizes % of ELA CST Advanced Proficient Kids who receive a placement level of 5 of the End of Semester Exam and... % ELA CST Proficient Kids who receive a 4 on the End of Semester Exam 54321

10 Aligning Bands by Mean and Std. Dev.

11 Calculated Aligned Cutoffs Band% CutoffCutoff Point 1 Far Below Basic 0% % Below Basic49.6% %32.19 – Basic61.6% %40.02 – Proficient76.2% %49.49 – Advanced86.2% - 100%

12 In Semester 1 Bands According to ELA CST Band Using Aligned Cutoffs Distribution of Seventh Grade Students (%)

13 In Semester 1 Bands According to ELA CST Band Using Aligned Cutoffs Distribution of Second Grade Students (#)


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