There is not a hard and fast line marking when a person is or is not appropriate for Independent Living. It can be a hard call to make. Generally, it will only come up if the resident or the resident's family bring it up, or if staff are made aware of problems with the resident's behavior when outside their residence. There is a continuum, a 3-dimensional one, not a clear cutoff point.
At our community (Ingleside at King Farm, Rockville, Maryland), there is a staff committee that meets weekly to discuss residents about whom there are questions that may relate to their appropriate level of care, or whether they need to have aides help them in IL. Reports from other residents may be helpful to them, but there has never been any effort to let residents know they can report issues with other residents and where these should be reported. The committee uses incident reports that are generated from input by staff or residents. They work to determine whether an IL resident would be better in a different level of care or other adjustments, and what level of care would suit the person's needs best.