This is a book that contains a place to list the concepts learned in each subject each day, any special events that happened, and a listing of behavior grades and their requirements. Specifically, each student can list what they learned in each subject that day so parents will have an answer the old question: "What did you do in school today?" At the beginning of each week students will list their vocabulary words, spelling patterns, and reminders of upcoming events, such as picture day, field trips, etc.
When a student has a grade change for making a poor choice, I ask for their agenda, and write a quick few words explaining why their grade was changed, such as "not following directions," or "goofing off in the bathroom," etc. This lets them know the answer to the other, sometimes daily, question: "Why was your grade changed?"
It has saved me a lot time and anxiety in parent/teacher communication.
It is easily adapted for upper grades. The list of spelling patters can be replaced with the reading concept or grammar concept of the week , or the math unit of the week, and so on.
Also, not everyone uses letter grades and they can be replaced with card colors that might be used.