All teachers are like that

It sounds like you asked mid leaving the class, most teachers would tell you to sit down regardless just for interrupting

She did that shit on purpose.

I swear I know you O.O

It's amazing that flash cards is an ambiguous term now -- I immediately got confused upon reading this wondering if it was some kind of photoshop class... -- I know what flashcards are, but am still wondering why you'd have to give them to a teacher, aren't they a study aide? Anyway, it happens dude. I asked a teacher, multiple times in the last two weeks of the year if I still owed any detention, she told me "no" multiple times and eventually to stop bothering her about it (we couldn't get our report cards if we owed detention) -- I got a note mid summer that I owed detention for her class (for being tardy like 5 minutes here or there), so I had to come in to summer school and help move desks and crap for the school to make it up. It was totally bogus. If anything though, it makes you learn to appreciate people who have their shit together, and prepares you for being able to deal with it when they don't. :-)

I am a high school teacher, and I can tell you if it was at the start of the lesson, it was hectic and she probably couldn't hear you. There have been LOTS of times my students have caught me with stuff like this, and it's almost always because I couldn't hear them over all the noise of the hallway, the intercom, and the other students.

F your teacher.

This is why I hated school. The teachers were morons.