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_1414743_1 (students INTEGER, pupil_teacher_ratio VARCHAR)
### Question:
What is the highest number of students with a teacher:student ratio of 20.8?
### Answer:
SELECT MAX(students) FROM table_1414743_1 WHERE pupil_teacher_ratio = "20.8"