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_19897896_7 (class VARCHAR, university VARCHAR)

### Question ###
in which class was the ohio state university

### Accurate SQL ###

SELECT class FROM table_19897896_7 WHERE university = "Ohio state"