A biofilm is any group of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular polymeric substances (EPS).
Career Requirements. Kindergarten teachers in public schools are required to have at least a bachelor's degree in education and teacher certification for the state in which they work. Certification typically requires candidates to complete student teaching requirements and pass any required professional exams.
Compulsory school age is 5 years old. Children can enter kindergarten early (at age 4) contingent on a local school board decision that the child demonstrates capabilities warranting admission to kindergarten. Local school districts are required to measure the school readiness of entering kindergarteners via an approved assessment system.