In 451 or 450 Pericles carried a law confining Athenian citizenship to those of Athenian parentage on both sides. No source provides any background to this proposal; it is not even clear whether it was retrospective.
A high school diploma or GED is enough to get started as an office clerk. It is important to have some office skills, such as typing, good phone skills, word processing, etc. Most training is done on the job.
Because most scanning clerk positions are entry level, a college degree is usually not required. However, in a competitive marketplace, an associate's degree in office administration or outside classes in document management or imaging programs will help increase your chances of landing a position.