Nimble Assessment Systems, Inc. (Nimble) specializes in computer-based testing, with an emphasis on accessibility and accommodations for students with disabilities and special needs. Recognizing the rapid growth in computer-based testing that will occur during the next 10 years and the challenges that computer-based testing pose for students with disabilities, Nimble created NimbleTools. NimbleTools is a computer-based test administration system that flexibly adapts the user interface to provide students with appropriate accessibility and accommodations. Tools specifically designed to meet the needs of students are incorporated directly in the system, avoiding the need for schools to purchase separate software or to configure computers so that external software can interact with the test delivery system. Embedding accessibility and accommodation tools in the system guarantees that tools will be available to all students across a state, that the tools will function properly for the test, and that the tools will provide accommodations in a standardized, controlled manner for all students.