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 endowment (school_name VARCHAR, school_id VARCHAR)
TABLE: CREATE TABLE school (school_name VARCHAR, school_id VARCHAR)

### Question ###
List the names of the schools without any endowment.

### Accurate SQL ###

SELECT school_name FROM school WHERE NOT school_id IN (SELECT school_id FROM endowment)