Nephew asked me to sign his diary and not tell his parents about the teacher's note
During the week my nephew lives with us, and I'm the one who signs his school diary. Yesterday there was a note from his class teacher about two incomplete assignments. He asked me to sign it and not mention it to his parents when they call. He was quite upset. I signed it, because the teacher needs a signature. I haven't decided about his parents. They are the ones responsible for school decisions, but I don't want him to stop showing me the diary. What would you do in my place?