Instead of investing your time and energy into schools, focus it on entering the actual Gnostic Church. The Gnostic Church is not in the physical world.
Thank you for the resources. I will be using these for later reference.
I agree wholeheartedly with your answer. I was expecting an answer like this. Although I'm still naturally curious about an answer to the original question.
This answer also brings up a couple more questions. Do you mean I should not worry about physically attending gnostic schools? And should instead conduct my own solo study? Or just that I should make this my priority?
Also if schools are not important and are not worth investigating then what is the purpose of the three chambers? Are the three chambers not a system designed for instructing students in the physical world towards the inner worlds?
It is natural that every physical school or tradition will degenerate in this kali yuga. They are temporal and therefore we should not place our faith in them. This is clear. However, they are tools. Is it not worth knowing how sharp a tool is? Or knowing what different tools are available? Even if they are supplementary to the tools inside us... But these supplementary tools also show us how to find and use our inner tools.