Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_56 (class_aAAAA VARCHAR, school_year VARCHAR)
### Question:
what AAAAA class has the school year of 1990-91?
### Answer:
SELECT class_aAAAA FROM table_name_56 WHERE school_year = "1990-91"