The Just in Time concept is very interesting. Using Forms for a "pre-entry" ticket to understand what students took away from the previous week's lessons is great. There is an aspect of accountability and the teacher can benefit from being able to re-adjust the day's lesson to what the students missed from the homework assignments. I really like that. I strongly believe that homework should not be busy work, it should have practical, real world applications. In English class, that means homework should be reading the short story or novel we are learning. Class time should be reserved for discussions, projects, activities, or group work.
One of the things I suspect that JITT requires is that ever elusive teaching need: time. Reviewing these kinds of forms every day, prior to a lesson, and then re-orienting my lesson around that information would be unrealistic for me. I am a working mom with three small children. I am happy if I have time to eat...ever. I would need to orient my lessons plans around this from day one.
I could envision using the forms as a way to do an end of the week review of what the students really understand from the reading and discussions the week before. Then, I could orient my Monday morning class around reviewing the concepts I can see that they are lacking, based on the information from the end of the week FORMS.