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_name_30 (location VARCHAR, _number___county VARCHAR, enrollment VARCHAR)

### Question ###
What is the location where enrollment is 266 and and the county is 18 Delaware?

### Accurate SQL ###

SELECT location FROM table_name_30 WHERE _number___county = "18 delaware" AND enrollment = 266