On how many different dates did schools from Chestnut Hill, Massachusetts join the conference?
CREATE TABLE table_1973842_1 (joined VARCHAR, location VARCHAR)
SELECT COUNT(joined) FROM table_1973842_1 WHERE location = "Chestnut Hill, Massachusetts"
### Context: CREATE TABLE table_1973842_1 (joined VARCHAR, location VARCHAR) ### Question: On how many different dates did schools from Chestnut Hill, Massachusetts join the conference? ### Answer: SELECT COUNT(joined) FROM table_1973842_1 WHERE location = "Chestnut Hill, Massachusetts"