CREATE TABLE table_name_11 (suburb_town VARCHAR(255), school VARCHAR(255), years VARCHAR(255), founded VARCHAR(255))
What suburb/town has school years of k-6, was founded before 1875, and has Ashfield Public School as its school?
    
SQL: SELECT suburb_town FROM table_name_11 WHERE years = "k-6" AND founded < 1875 AND school = "ashfield public school"