You have missed the most important part of the metaphor. You are not alone. Education in general has missed it which is why it produces the harm that it does. It lacks the purpose of the North Star.If you care to carry on the seagoing metaphor the rudder for what you call " secularists" is reason and knowledge. That of God-believers is God's word. The compass bearing is shared by believers and unbelievers of good will and is an analogue of the good.
https://www.space.com/5849-navigating-stars.html
The North Star provides guidance for the captain of the ship. Without it ancient ships just turned in circles. Our inner north star can align our being. As we are, our inner being is in a state of chaos and we turn in circles. Our inner north star can turn chaos into organization. Secularism denies the value of our inner north star so struggles against ways of inner alignment preferring instead blind indoctrination for providing human meaning and purpose. Without inner alignment we cannot know where we are going assuring that we cannot end up as human beings.As the late Henry Neeley, a popular lecturer at New York's Hayden Planetarium during the 1950s once noted: "The navigational use of the stars will continue to be a valuable asset for many years to come. In spite of all the scientific aids that have been developed to do the navigating by robot science, the ancient stars will still be a 'must' for navigator or pilot." Indeed, celestial navigation is still an important part of a navigator's formal training and while we might immediately think of sailors in this regard, the pilot of an aircraft can also sight on the stars in an emergency (and often with an advantage over sailors, being high above any obscuring clouds). [By day, ancient mariners used sundials to navigate.]