All courses at Middlebury are subject to student evaluation. The office of the Dean of Curriculum will send student course response forms to all teaching faculty two weeks before the end of the term. Faculty distribute the forms to students during one of the last classes, and two students take them to Old Chapel.
Here is a sample form (side 1) and sample form (side 2)
You may also want to distribute mid-semester evaluations for your own use part way through the term.