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About Our Research

DRC|CTB ranks among education's leading assessment partners. Our programs and services are recognized for excellence and innovation and encompass diagnostic, summative, interim and formative, performance-based, and observational assessments for learners of all ages. DRC|CTB has a long tradition of innovation in educational assessment and measurement theory. We develop educational assessments that are valid, fair, and reliable, and report results in ways that are easy to access, use, and understand and with information that informs instruction.

DRC|CTB Research is actively involved in both basic and applied research. Our researchers are leaders within the educational measurement community; they present their original research at major conferences and in major publications. We also apply this research as part of our testing programs that use both our published assessments and the custom tests we develop for our customers, putting innovation into action.

DRC|CTB has pioneered numerous innovations in educational measurement. We were one of the first companies to use item response theory (IRT), both multiple-choice and constructed-response items to calculate students' scaled test scores, and statistical techniques to detect bias to support large-scale assessments. DRC|CTB researchers developed the Bookmark Standard Setting Procedure™, a groundbreaking method for establishing cut scores (e.g., passing scores) for tests.

DRC|CTB's innovation continues today with technologies that include web-based assessment and reporting, student response device software, and artificial intelligence for automated scoring of student essays. Our fully automated Optimal Test Design (OTD) engine, which is used during test development, was developed to ensure that test forms are optimal with respect to statistical criteria specified by the customer, while simultaneously satisfying content constraints specified by the test framework.

DRC|CTB Research partners with our customers to bring them the newest assessments and innovations. These partnerships allow us to understand what students, teachers, and schools need from tests and test results. We know that the educational landscape is constantly changing, and we eagerly share our innovations with users of DRC|CTB's custom assessments and published products by delivering rapid and thoughtful implementation of effective solutions that improve education and learning.

Featured Researcher


Dr. Keith Boughton

Keith Boughton, Ph.D., is a Senior Research Scientist. Dr. Boughton works as the lead Research Scientist for Test Assessing Secondary Completion (TASC), DRC|CTB's test for high school equivalency. In this role, he provides psychometric leadership to product managers, content experts, and software engineers who work to implement the TASC assessment system across the country.

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Understanding Assessment


The Learning Cycle

DRC|CTB supports educators and students
throughout the learning process.

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