Good points about our objectives for education. Unfortunately, governments have other plans. For them, education is for indoctrinating learners with the political ideas of the rulers and teaching skills the economy needs. This is true whether in all countries.
What ideas do we have to maintain the separation of Church and state? Some options: Refuse to recite the pledge. Support people who reject religion. End public celebrations of religious holidays with leave from schools and work. Stop the commercialization of religious holidays. Encourage science not superstitions and faith.
Others?