Lisa,
Thank you for this post. These are all great things to do.
One idea a few successful schools has tried is to require faculty members to develop in "independent learning plan" (ILP)for each week. The plan provides specific things for students to do to keep up if they miss class. Teachers either distribute the plan at the beginning of each unit or they email the plan to students who are out.
This technique requires students to take the reponsibility for staying up with the class. The ILP does not replace excellent instruction, but it does help students stay caught… >>>