Separation of Church and State in Public Schools in the USA

Separation of church and state has been the source of many arguments in the USA in the last decades. The concept teaches and ascertains that all that is spiritual must be separated from all that is materialistic. Since religion is related to God and the latter is a spirit, religion must be kept away from real worldly affairs and issues, mostly government. However, the notion is being misused in the USA by many atheists, agnostics, and seculars who try hard to eliminate Christianity and every biblical concept from public forum and educational arena, planting the seeds of secular humanism to grow and spread.