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.
In order to teach preschool, the student must have at least a high school diploma or equivalent. To teach K - 12th grade, the student needs a bachelor's degree. In the case of public schools, the teacher must possess a bachelor's degree and also be licensed as a teacher in the state where they live.