CDAS
 
 
   

Are you ready?

Is your school or district ready to take learning to the next level? Contact Life Long Learning today and see how incredible learning can be.

 


 

 

CDAS

 

 

 

As schools and districts become increasingly accountable for raising student achievement, the need for high quality classroom diagnostic tools has become imperative. National and state testing results shared with classroom teachers on a yearly basis are insufficient for making strategic instructional decisions on a day to day basis. While many districts and schools have moved to “benchmark” or “interim” assessments, given on a more frequent basis (quarterly, semester, or 6-8 week intervals), the cumulative nature of such tests are wholly inadequate for measuring student mastery of individual content standards, and fail to provide student achievement data in a timely manner.

 

For the past three years, Life Long Learning & Associates has worked with schools and districts in California, Utah and Illinois to develop a comprehensive set of classroom diagnostic tools. The development of a CDAS™ (Classroom Diagnostic Assessment System) in every instance has resulted in higher student achievement. These results have been accomplished by increasing the alignment between state standards, instructional decisions, the use of instructional materials, and formative classroom assessments.

 

The development of a CDAS™ system creates an opportunity to engage teams of teachers in authentic professional growth activities with immediate impact on classroom room practices. As a professional learning community, teacher teams learn to unpack their content standards to reveal the student achievement targets that are often implied rather than stated in state standards. Furthermore, teams learn how to create more valid and rigorous classroom assessments by applying the standards for test construction used by the Educational Testing Service (ETS), as well as Life Long Learning & Associates design criteria. Teachers involved in the development process emerge as leaders and staff developers for their colleagues.


 

 

Overview of CDAS Process
 

 

TASK

PURPOSE

 

Determine the standard(s) to be assessed and how they should be interpreted (by unpacking/deconstructing)

  • Agreement by stakeholders on which standards or components of the standard are important.

  • Not all standards are equal in terms of developing student understanding of curriculum content.

  • Most standards are subject to multiple interpretation by teachers, therefore, if agreement is not reached, students in different classes will not have the same educational experience (for better or worse, depending on the teacher)

  • Need to find agreement on the essential elements of a standard (knowledge, skills/understanding, reasoning)


 

Locate released items from state and nationally normed tests.

  • These items have typically undergone a rigorous field test and review before being accepted into an item bank

  • Many of the questions are written to assess more than knowledge and comprehension (require higher order thinking)

  • Many state and national tests (college board, AP, NAEP, SAT) have been written by professional test writers

  • Be careful when using item banks provided by a publisher…these questions typically have not undergone a rigorous quality control. They typically focus on lower order think skills with an emphasis on comprehension of academic terminology and/memorization of terms.


 

Analyze each released item for alignment to standards and its cognitive level.

  • Trains the mind to become more critical in analyzing and selecting questions that are written at higher cognitive levels (Bloom’s), vs. those that focus on lower levels.

  • Helps participants negotiate and come to agreement in terms of what is important to assess vs. what is simply easy to assess

  • Helps participants to learn how to write quality prompts (assumes that released items are decent models) and distracters

  • Improves the participant’s ability to write test items.


 

Determine the schematic for the assessment tool to be designed:

 

  • Establishes the number of questions per standard – allotting more questions to more important standards or objectives

  • Establish a level of rigor students will be expected to perform, rather than allowing the availability of questions to set the standard for rigor by default.

  • Determine the format to be used (# of Multiple Choice questions, Open-ended, short answer etc.)

  • Standardize the “look” of the assessment tool – Consider formatting the tool similar to the state or national assessment your students will be expected to take.

  • Layout the answer key to ensure equal distribution of distracters and the absence of a predictable pattern.
Craft the assessment tool to the design specifications
  • Consider the first design to be a draft. It is extremely rare that one can design both a valid and reliable tool the first time. That’s why it takes most testing companies 2-3 years to develop a decent tool for evaluating student achievement. Yet teachers and schools routinely evaluate and make judgments about student achievement based on test items that may be flawed and poorly designed as a result of limited, or no, quality control.

  • Select appropriate test items from released items collected earlier in the process and modify as needed.

  • Write test items to fill in gaps where no released items are found. Use criteria and guidelines provided by LLL for writing new items.

 

Collegial Review of Draft
  • Unless you have considerable training and experience writing high quality selected response questions (i.e. you do this for a living), accept the fact that you will probably write a few questions that have poor prompts, unclear distracters, are cognitively inappropriate, poorly worded, or worse, simply do not assess what they are suppose to assess. You need your colleagues and their “eyes” to help you see some of these shortcomings. Nobody’s perfect!

  • If your colleagues are going to use the assessment tool you have designed they should at least have some opportunity for input.

 

Pilot the Assessment in multiple classrooms and collect student Work
  • The field test provides student data that will be used to identify questions that might require additional revision

  • The results of the field test will be helpful to establish performance bands (performance standard for mastery) during the next step of the process.

  • Provides initial data a teacher can use to identify re-teaching targets, despite the fact that some of the questions may later be determined to be invalid (in other words, it isn’t a wasted effort).

 

Conducting an item analysis
  • Reveals patterns in student responses, and therefore, their thinking

  • Reveals items that may need to be revised or eliminated.

  • Reveals re-teaching targets (what needs to be re-taught, and who).

  • Data needed to establish performance bands (determine how to interpret scores, for example, “what score is needed to be considered “proficient”?)

 

Establish performance bands for the assessment
  • Establishes “cut scores” based on (1) professional agreements among users of what constitutes mastery

  • Establishes “cut scores” based on expectation rather than arbitrary scores (i.e. 70%=C)

  • Establishes “cut scores” based on the rigor of the test, conceptual difficulty, importance of the standard relative to other standards, and student performance.

  • Eliminates artificial grading scales that assume all assessments are qualitatively identical.


 


 

Copyright 2007 W. Chalk. Life Long Learning & Associates. All rights reserved. Duplication of this material is strictly prohibited unless permission is granted by Life Long Learning & Associates. P.O. Box 2804 Blue Jay, CA 92317 (909) 337-0343 www.lllearning.net Created for Pacific HS. San Bernardino, CA.