I like the idea of #7, but then more modern font, maybe brighter colors and somewhere a roasted coffee bean. We do training in making coffee (Barista) and coffee roasting.
The CU represents a cup, maybe the C smaller, so it looks more a cup.
I hope you like my #57 entry Contest Holder. I made the "C" smaller to make the "CU" more cup looking as what you like to see, and I made removed lines to make to avoid complex look, and the font is more modern as you want to see to. I hope you like it . God bless!
my #216 entry is better i think because its can surely stand alone even without the text . and there is a coffee grain inside the cup formed "CU" and an abstract book below. the logo can stand alone and can be determined as a coffee academy logo . i hope it works for your taste Ma'am/Sir. God bless you!