The federal law known as the Individuals with Disabilities Education Act or "IDEA" defines Assistive Technology (AT) as "any item, piece of of equipment, or product system -- whether acquired commercially off the shelf, modified or customized -- that is used to increase, maintain, or improve the functional capabilities of students with disabilities." This definition of AT is broad and it should be noted that the word “technology” does not imply a requirement for electronic components. AT encompasses a range of tools from low technology supports (ex. communication boards, pencil grips) to higher technology tools which utilize sophisticated technology (ex. augmentative communication devices that are accessible via eye gaze).
IDEA 2004 also defined "AT Service" as including:
Assistive technology (AT) can significantly impact learning, independence, self-esteem, and quality of life for an individual, especially an individual with a disability. AT can provide an effective method for access to the curriculum, independence, and a way to make progress towards educational and life goals.
Although assistive technology can support a number of deficit areas, it is typically used to help individuals with deficits in communication, reading, writing, and executive functioning/organization skills. It also can have a huge impact for students with vision and hearing impairments as well as sensory disorders.
An AT trial is the process where a student tries an assistive technology for a set period of time and data is collected to measure the success of using the technology. After reviewing the data of the trial, the team decides whether or not the assistive technology was beneficial to the student and should be implemented as part of educational programming.
An AT assessment is a more formal evaluation process that may include the following: a preplanning meeting, observations of the student, staff/teacher parent interviews, evaluation of the student through trial use of various assistive technologies, training, data collection, a post assessment meeting that involves sharing an assessment report with the school team and possibly additional follow up meetings. AT Assessments are typically reserved for students with complex needs and who require input and training from many team members and/or specialists.