I just work in industry, but it’s the “standard” accreditation. You’re more likely to get get hired, have a higher salary, have access to better profs, etc. To me, it just shows that a graduate went through a sufficiently rigorous curriculum.

I graduated from UMaine (Orono) 20+ years ago with a degree in Business, concentrating in Accounting. I don’t think any of the other UMaine campuses besides Orono and USM are AACSB accredited, so that would be a deal killer for me.