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 table_21027 ( "SCHOOL" text, "LOCATION" text, "PUBS. 2010" real, "TOTALS 06-10" real, "RANK 06-10" real, "PUBS 2011" real, "TOTALS 07-11" real, "RANK 07-11" real, "WORLD RANKING" text )

### Question ###
How many figures are there for Rank 07-11 when the world ranking is 4?

### Accurate SQL ###

SELECT COUNT("RANK 07-11") FROM table_21027 WHERE "WORLD RANKING" = '4'