Step-by-step explanation:
Mr./Ms./Mrs. (Head Teacher),
I'm writing you a letter to express my concerns about our school canteen. In my opinion, our canteen's menu requires some developments. I believe I am not getting the appropriate amount of energy and nutrients to keep my body and my brain working efficiently throughout the school day.
I did my research about the standards of a normal school canteen and found that there should be plenty of fruit and vegetables, some meat and fish, milk, and a small amount of food and drink high in fat, sugar, and salt. It is said to ensure that students like me have the energy and nutrition I need to get the most from my whole school day.
I do not know if our school is capable to meet those standards, but I do hope that you (sir/madam), as the Head Teacher of our school, reads and study my letter about my concerns for our school canteen. If ever there is a problem, we can ask the local government for some assistance to help improve our canteen’s menu and to meet the proper standards of a healthy food. Thank you, Mr./Ms./Mrs. (Head Teacher's Name). I look forward to seeing the ameliorations of our school canteen.
Sincerely,
(Your Name)
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I think there is a department that is responsible for the food standards of a school canteen or something, not sure. It might be too late for me to answer your homework, but I do hope it helps you. Sorry for any grammar mistake too, english is not my first language.