Religion and ethics in a neutral and objective way

“6. The Committee is of the view that article 18.4 permits public school instruction in subjects such as the general history of religions and ethics if it is given in a neutral and objective way. The liberty of parents or legal guardians to ensure that their children receive a religious and moral education in conformity with their own convictions, set forth in article 18.4, is related to the guarantees of the freedom to teach a religion or belief stated in article 18.1. The Committee notes that public education that includes instruction in a particular religion or belief is inconsistent with article 18.4 unless provision is made for non-discriminatory exemptions or alternatives that would accommodate the wishes of parents and guardians.”

http://www.unhchr.ch/tbs/doc.nsf/0/6187ce3dc0091758c1256f7000526973?Opendocument