This product is excellent to use for tracking tardies. I write each child's name on the line next to their student number, so they know exactly where to go when they are tardy.
My students are in first grade, and although they know when they are tardy, I make sure to remind them to check off the amount of tardies. This method helps me quickly track when students get to 5, or 10 tardies. If students have more tardies than that, then I personally track it on my own.
You can either have your students put a check mark, write the date, or the time under the specified tardy. I do this so that if a parent ever challenged their child's tardies, I have proof of it outside of my gradebook :)
I hope you find this resource useful! I have become very disciplined with tracking with this resource.