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
Original Cutoffs for ELA Semester 1 Exam 7 th Grade Band% CutoffCutoff Points 1 Far Below Basic 0% % Below Basic30% % Basic50% % Proficient70% % Advanced90% - 100%
Distribution of Seventh Grade Students (%) In Semester 1 Bands According to ELA CST Band Using Original Cutoffs
Distribution of Seventh Grade Students (#) In Semester 1 Bands According to ELA CST Band Using Current Cutoffs
Percentage of Kids in Each ELA CST Band Who Received Each Semester Exam Raw Score
From Raw Score ELA Semester 1 Grade 7 ELA CST Band NMeanStd. Dev. 5 (Advanced) (Proficient) (Basic) ( Below Basic ) ( Far Below Basic )
% Distribution with Means of Students within Each ELA CST Band
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,...
% 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
Aligning Bands by Mean and Std. Dev.
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%
In Semester 1 Bands According to ELA CST Band Using Aligned Cutoffs Distribution of Seventh Grade Students (%)
In Semester 1 Bands According to ELA CST Band Using Aligned Cutoffs Distribution of Second Grade Students (#)