Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE CLASS (PROF_NUM VARCHAR, CRS_CODE VARCHAR)

### Question ###
How many professors are teaching class with code ACCT-211?

### Accurate SQL ###

SELECT COUNT(DISTINCT PROF_NUM) FROM CLASS WHERE CRS_CODE = "ACCT-211"