Is this a nice outfit for first day of school?

I'm guessing you are 12 or under since the pants you chose have rhinestone starbursts on them, something I would have been all over at that age. BUT they look very little kiddish, I would go with distressd / ripped jeans in the future if you want to add some drama to your denim or SMALL rhinestone accents like rhinestone studs instead of gromets :)