Research shows that teacher effectiveness is the single most important school-based factor in student success. Students who have highly effective teachers for three years in a row will score 50 percentile points higher on achievement tests than students who have less effective teachers three years in a row (Sanders & Rivers, 1996).
A cuticle /ËkjuËtÉªkÉl/ , or cuticula, is a term used for any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection. Various types of cuticle are non-homologous, differing in their origin, structure, function, and chemical composition.
Nail Cuticle. 1  Also known as the eponychium, it is the part of the skin that overlaps onto the proximal part of the nail plate. 2  It provides some, although minor, support for the nail plate but more importantly, the cuticle seals the nail sinus to prevent injury and infection of the nail root or matrix.his the largest part of the nail and is composed of laminated layers of keratin. It is similar in structure to human hair and skin and is made up of dead cells. Ask a Doctor Online Now! The proximal edge of the nail plate is the nail root which emanates from the nail sinus.