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 ( school VARCHAR, player VARCHAR, position VARCHAR, team VARCHAR )

### Question ###
What school did P Jay Gehrke of the Kansas City Royals attend?

### Accurate SQL ###

SELECT school FROM table_name_30 WHERE position = "p" AND team = "kansas city royals" AND player = "jay gehrke"