Over My Shoulder: Composition and the Academy: A Study of Writing Program Administration
Here, if you don't remember, are the rules to Over My Shoulder. The book here is:
Hartzog, Carol P. Composition and the Academy: A Study of Writing Program Administration. New York: Modern Language Association, 1986.
and the quotation is from page 90.
[Erika Lindemann's TA training] manual sends teaching assistants a message something like this: The teaching of writing is a sophisticated practice, grounded in theory, history, and research. You can do it, and you can do it well. Those of us preparing the manual know more about teaching writing than you do right now, and we've reached consensus on how it should be done, but we trust you to carry it out and gradually to develop your own variations, your own distinctive style and practice. This work is important: it matters to your students now and throughout their careers, and it matters to you, personally and professionally. You should do it well and with dignity, and it will be a good experience for you. You begin as a novice who needs instruction and support, but you join a community; it is a sharing community, and you will make your own contributions to your students and your peers. You will be called to account, but you will be judged fairly. You will know what's expected, and you will be given direction and help. You will be treated with the same respect we want you to give your students.