old credit

[alab21]

What is the oldest credit the Big 3/4 will allow? Somewhere in my research, I thought I saw 30 years was the cut off, but now I can't find it.  And I think there was a different (shorter) cut off for AOS?

My husband did his A&P in 1990-91, which looks like the Tech Studies degree would fit, but I think those credits are too old for his AOS. If it's possible to still use though, he'd only need his gen eds and corner/capstone. He also took some electrical classes over 20yrs ago. He's been in IT for over 20 years, so he'd prefer an IT degree, but he really just needs to tick a degree box for a future promotion.

I did most of my gen eds 30+ yrs ago, and some programming/unix type classes about 20-25 yrs ago, that I know are not acceptable. My only recent credit is in the form of CLEP's in the last year or so, and freebies through Sophia, Institutes (2cr UL), and I think a TEEX course. 

If they're super old, and unacceptable credit, do I still have to send a transcript? What if the school is no longer around? 1 of mine is useless for credit transfer, I think, and it's LONG since been out of business. I expect it was NA, not RA also. 

I'm evaluating what we each have that's still viable, and then I'll list what we each have/seek assistance in a future post.