The “problem” will continue in college. A fair number of my classmates showed up only on (a) the first day of class and (b) exam day.
Funny story. Brand new Ph. D. walks into class and announces “pop quiz” on the first day. The high, low and median score was ZERO. He neglected one vital piece of information,
Retest had high, low and median score was TEN. Another vital piece of information not provided. Professor gives up and starts teaching from the book.
Here’s the funny part: This actually happened at a university - in 1966. So, it’s not a new problem.