You can't "teach" spirituality, you can show the way and provide an environment conductive to learning.
Spirituality is too intuitive to teach normally as it's all about energy. When a spiritual person creates high frequencies, all lower energies of a person come to the surface so he can face his/her lessons, that's spirituality. Not "hopium" or "false positivism" which belongs to New Age and not actual reality and physics based spirituality.