Classroom Diagnostic Tools (CDT's) FAQ's

What are the Classroom Diagnostic Tools (CDT)?

The Classroom Diagnostic Tools (CDT) are computer adaptive diagnostic assessments designed to measure both student mastery and growth in achievement for the PA Core Reading and Mathematics standards. Computer adaptive assessments use student responses to adjust the types of questions being asked of students to find their highest level of mastery for a standard. The purpose of the CDT is to provide information that will help guide instruction by providing support to students and teachers.

Who takes the CDT?

NPSD administers the CDT Reading to all students in Grades 3 - 10 and the CDT Mathematics to all students in Grades 3 - Algebra 1.

When is the CDT administered?

The CDT testing schedule is developed by the district.

How long is the CDT?

The CDT is untimed. Because the assessment is computer adaptive, not all students are asked the same number of questions. The average student completes the assessment in one hour, completing approximately 50 - 60 questions. If additional time is needed the student may continue the test at another time until the test is complete.

How are students scored on the CDT?

Students are awarded points for correct answers. The total number of points earned by a student is converted to scaled score and a diagnostic level. The diagnostic levels are Red, Green, and Blue. Students in the Red level have areas of need that require intervention to reach grade level mastery. Students in the Green level have mastered the skills and standards required to be ready for the next grade level. Students in the Blue level have exceeded grade level mastery requirements.

How do I find out my student's score on the CDT?

Student scores are available from the student's teacher. These scores are not included in a student grade for the course.

Where can I find more information about the CDT?

Classroom Diagnostic Tools (CDT) Resources from PDE