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 college ( cname text, state text, enr number )
TABLE: CREATE TABLE tryout ( pid number, cname text, ppos text, decision text )
TABLE: CREATE TABLE player ( pid number, pname text, ycard text, hs number )

### Question ###
How many colleges has more than 15000 students?

### Accurate SQL ###

SELECT COUNT(*) FROM college WHERE enr > 15000