cation + learning's sign-in/-out sheet gives 1 place for all students to register as they (enter or) leave your classroom. The form could also be used to take attendance for students in my advisory (or homeroom) whom "drop in" on days when we don't meet (since that is when the school takes it's 'official' attendance).
I also use this form in conjunction with my "student calendar" to keep track of the number of exits a student makes from my classroom and for what reason over a period of time. It comes in handy in parent-teacher conferences for various reasons.
Reasons for entering or leaving are editable.
cation + learning is a product of a no-frills chemistry teacher who saves the frills for colorful, sparky, exciting demos and laboratory experiments for her students!