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_51 (ihsaa_class VARCHAR, size VARCHAR, mascot VARCHAR)
### Question:
What is the IHSAA class of the school with less than 400 students and a mascot of the Tigers?
### Answer:
SELECT ihsaa_class FROM table_name_51 WHERE size < 400 AND mascot = "tigers"