Time to Conduct an Informal Early Feedback (IEF). Using the informal early feedback (IEF) tool can help you learn about what is working and what is not working in your class at a time when you can make important mid-course corrections. You can get valuable valuable information not only about your teaching, but also on what and how your students learn. Late-September to mid-October is a great time to collect this feedback. Additional information and samples are on our website. Also, register for our workshops about IEF being offered now.