Common meaning:

Skills and knowledge that is not taught but is picked up naturally as we learn different topics.

Hidden meaning of the Equity religion: 

Western societies surreptitiously teach dominant norms that oppress the marginalized.

Discussion:

The Equity faithful believe that dominant norms are being taught in schools as part of a hidden curriculum. They think that this indoctrination into the Western system is oppressing the minoritized.

Committed Equity believers decided to do something about this hidden curriculum. They began to infiltrate teacher education programs at universities and ensured that people training to be new teachers would be fully woke. These teachers went into the school system and began a process of indoctrinating students into the new religion. Just recently, parents started to realize this was happening, but it has been underway for a significant period of time.

What the Equityists actually want to remove is liberal values and replace them with their virus of a religion. Instead of teaching children that we should try and treat everyone with respect, they are now taught that some people are good and others are bad based on characteristics like the color of their skin.

This does not end well.