I think this is a very valid question and one that requires great thought, care and attention.
I believe 'under the circumstances' to be 3 highly relevant words in this case. So, you could say that for someone who is suffering deeply in life, yes it is normal. During my years in depression, it was normal for me at times to have that thought about leaving. Keeping those 3 words in mind, it is also normal under the circumstances of things beginning to change that those thoughts about dying lessen until they are no longer there.
Do you feel you know what needs to change in order for life to appear different? Do you think under the circumstances of greater self esteem or your parents listening to you and guiding you through this deeply challenging time life would feel different? Do you think that school is dictating your possibly depressing circumstances? Let's be honest, school can be pretty depressing and stressful. My son is also in year 9 this year. He and I have had to do a lot of work together to help him make it through what, so far, has been one of the toughest years of his life. Personal skill development definitely dictates our circumstances.
I can't help but wonder what is it about your circumstances that you find deeply challenging? Not sure if it will help to know but I'll throw it out there anyway:
Very few of us, as kids, are given or taught the skill set involved in 'rising through challenges'. When you think about it, this doesn't really happen. Kind of crazy in a way, hey. We're kind of left to work things out as we go along in life, winging it. Some challenges may take us days to work out, weeks or even years. We can be left not knowing how to deal with the challenges we face, leading us to ask the question 'What's wrong with me?' In truth there may be nothing wrong with us; what's wrong is...we have been left to face challenges without the skills involved in mastering them.
I hope you feel free to come back anytime. You are more than welcome in returning here. Take care :)