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_13 (pupil_teacher_ratio INTEGER, city VARCHAR, students VARCHAR)
### Question:
What is the lowest pupil to teacher ratio for Saratoga schools with smaller than 1213 students?
### Answer:
SELECT MIN(pupil_teacher_ratio) FROM table_name_13 WHERE city = "saratoga" AND students < 1213