AT is a range of strategies and resources, which includes services and tools, which enable a student to meet learning outcomes or to improve or maintain a student's ability to meet learning outcomes.
AT relates to the task, not to specific disabilities.
The multi-tiered system of supports offers various levels of Assistive Technology supports and services across different tiers while accessing universally designed curriculum and various learning activities.
Tier 1 Accessible Technology is grounded in universally designed concepts that offer supports that are beneficial to MOST students while engaged in the core curriculum in the common learning environment. Examples of accessible technology in Tier 1 might include sticky notes, picture supports, free text to speech or speech to text options (built in accessibility options on various devices).
Tier 2 Assistive Technology supports and services relates to more specific devices, services and support providing MANY students (but not most or all). Students who continue to demonstrate difficulties with Tier 1 supports and strategies, with documentation on what was tried, will be referred to Tier 2 Assistive Technology supports and services. Assistive Technology for Tier 2 would be recommended by an AT Specialist in collaboration with other team members including classroom teacher, learning support teachers, teaching support team. For example, Tier 2 Assistive Technology includes more specific recommendations including read aloud of digital text, screen magnification options, word prediction software/apps or extensions, speech to text.
Tier 3 Assistive Technology supports and services includes AT that enhances the functional capabilities for students with complex needs. Students who are non verbal for example, enhancing communication skills, will utilize individualized Augmentative and Alternative Communication Devices (software or Apps) to participate in school activities. AT services for Tier 3 will include the classroom teacher, learning support teachers, teaching support team and other professionals including SLPs, OTs, PTs, ASD specialists etc.
Adapted from https://sites.google.com/gnspes.ca/ns-clt-at-udl-mtss/home