Well this is what i did on September 2015:
Hi my name is _______ and i want to be voted for school councilor because i am a hardworking, friendly and helpful girl/boy. I will help you succeed and achieve more. If you want to make changes to the school tell me and i will tell the Mr/Mrs ______,{headteacher or school council leader}. Please select me for the reasons above and because -----what you have highly achieved in-----. Thank you.
I hoped this helped!! If you need any more help with school questions, feel free to leave a comment on my profile or message me!