CTB serves more than 18 million students in all 50 states and dozens of countries.
We were the first assessment company to offer measurement-based, formative, online assessment with Acuity.
We recently administered Indiana's statewide online testing program for 334,000 students in grades 3 through 8.
CTB created the assessment industry's first electronic scoring service.
CTB developed the first test items for the Common Core State Assessments.