The most common and most likely answer to this crossword clue is the 7 plus 7 letter word EVENING CLASSES
I've seen this crossword clue in The Daily Telegraph
E
V
E
N
I
N
G
C
L
A
S
S
E
S
Buddy explains!
The straight part
We know that "opportunities for learning" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case opportunities for learning = evening classes.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.