In the world of education, certification generally refers to the educational process by which future teachers earn the required state credentials to (a) teach specific subjects, (b) teach in specific areas, (c) teach specific grade levels, or (d) perform educational administrative functions in that state. This required teaching credential is often referred to as a teaching license or a teaching certificate depending on the term used by the department of education of the state granting the credential. Just as a driver's license can be categorized by the type of vehicle one is permitted to operate, so too, does a teaching license or teaching certificate specify what may be taught by the holder. Some certifications provide a license to teach specific subjects such as math, science, ...