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.
The cuticle is a waxy covering on the leaves of plants. It is produced by the upper epidermis, which is like the skin of a leaf. Its function is to protect the leaf from wate â¦ r loss through evaporation.Hope this helps!he cuticle is a waxy covering on the leaves of plants. It is produced by the upper epidermis, which is like the skin of a leaf. Its function is to protect the leaf from wate â¦ r loss through evaporation. Hope this helps!