TILLS Sampler pg 9 Handout.pdf
Two models. One powerful test.
TILLS incorporates two effective models: the Language Levels x Modalities Model and the Quadrant Model. These models work together to uncover the nature of a student’s strengths and weaknesses across both oral and written modalities.
The Language Levels x Modalities Model
TILLS is based on a unique Language Levels x Modalities Model that covers all the language and literacy skills students must demonstrate to succeed in school. This graphic gives you an overview of the model, along with the TILLS subtests designed to test each part of the model.
Oral and written language abilities during the school years are best explained by the Quadrant Model that includes sound/word and sentence/discourse language levels as contributing factors. By comparing students’ language/literacy skills at the sound/word level and the sentence/discourse level (rather than focusing on expressive/receptive factors or oral/written factors like other tests do), TILLS helps you make a differential diagnosis aligned with the quadrant where the student’s profile fits best.
The Language Levels x Modalities Model makes it easy to understand at a glance what’s being measured and how skills interrelate. It also helps interdisciplinary teams communicate clearly about the student’s needs.