The exam was left for you in plenty of time.
You just had to take it from your mailbox when you arrived in school that morning.
You didn't do that this time or the time before. In fact,you told the child it was not your responsibilty, although it is a big part of your job.
You said you would try to do it in the future.
Come on, YOU WOULD TRY!!!! It is your friggin job. How hard is it to do? No one is asking you to dig a ditch or perform open heart surgery. If you can't handle this, how can you handle being in a classroom?