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_19 ( enrollment INTEGER, founded VARCHAR, joined_conference VARCHAR )

### Question ###
What is the lowest enrolled school that was founded in 1992 and joined a conference before 1998?

### Accurate SQL ###

SELECT MIN(enrollment) FROM table_name_19 WHERE founded = "1992" AND joined_conference < 1998