Given a text, write a compressed version of it in a single sentence.
Q: Last year a small number of alumni each contributed between $2,500 and $4,999 to the school. To recognize donors who have achieved this level, Dean Lefstein has now established the Black Cane Society.
A:
Alumni contributed between $2,500 and $4,999 to the school. To recognize who achieved this level, Dean Lefstein established the Black Cane Society.