Not native English here.
But during our English classes in high we'd have about 10-20 glossary words to teach ourselves weekly. English classes probably were the easiest thing to get through with the least effort, and the homework didn't really make you much better than what the computer and hobbies already provided. However, sometimes these 10+ words every week could be hard to remember and the spelling on longer words could be tricky, count that in with all the other homework and they got very little priority from me.
Early on, it became a norm to just study the words 10 minutes before the class started, and if there were any words or spelling I felt uncertain about I'd lightly write it right on the desk with a pencil. At most I could have 5 words written out in full right on the table. The teacher always took a few mins to prepare before starting in the class, and classmates would always take their time to take a seat and chat with one another until they were asked to. So ample opportunity. Pretty much just open a book, lean over it and lightly write what you need between the bottom of the book, table and yourself, and you really need to look close to make out something is even written there, better yet if the teacher would hawk over your table you could just have something laying over it, or if for some reason they'd be onto you, all evidence could be wiped with your elbow/arm in one move.
Did it for over a year, didn't get caught once, and in a way, it's such a stupid and lazy way to cheat that it works. I've cheated this way in a pinch before in other subjects depending on the circumstances, but during those English classes is where I had it as a norm. Hidden in plain sight.
