I read your post and response and am stunned by your logic and lack of common sense. According to your logic, a nursing school should accept your pre-reqs no matter if you took them a year ago or 20 years ago. So, a microbio book from 1985 has the same information as one from today? So, today we have the same knowledge about viruses (HIV, herpes, etc), bacteria, etc. that we did 10, 20, etc years ago??
To compare this content to engineering is preposterous. Engineering is heavy on math and 2x2=4 today and it will equal 4 a thousand years from now. Medical science on the other hand constantly evolves especially new discoveries of viruses/bacteria, physiology, cancer cells, etc. which happen all the time.
When I applied for MBA programs, all the top programs required the GMAT entrance exam and I'm glad I took it because it helped prepare me for the rigorous program. A few smaller programs waived the GMAT and I suspect it was because they have to compete for students (and money) with other more established MBA programs. I suspect the nursing schools that waive these 7/10 year requirements also do it for the same or a similar reason.
Instead of whining about "the system," maybe you should focus on how to get accepted and put yourself in the best position to succeed or consider another career choice.
So, you're considering legal ramifications against these schools? Good luck with that...