Hi @Prago there are a few different approaches you can take depending on the levels of access people should have to the boards and the frequency you want the attendance logged and how you would like to see it grouped.
You could create a board with a checkbox column for each day of the week (M-F) with the teacher filling in a form at the end of the week per student via a form. If they they log daily, using a date column instead and having them fill out a similar form view would also work. You could then have a group on your board by week.
If you are open to having the teachers use the boards directly, you could easily create a Student Master board in which they would choose from so you keep your names consistent (connected board columns are not available in form views). You then have a much nicer way to report off overall attendance by student.
Again, there are a number of approaches you could take to accomplish this - if you would like to discuss more feel to reach out any time and we would be happy to assist further.