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.
Skills. The skills required of an audit clerk include mathematical, reading comprehension, time management and critical thinking skills. It is important to be able to use mathematics to solve problems, as dealing with number is a huge part of the job.