How do you write a invitation letter for school function?

To write an invitation letter for a school function, start with a formal greeting and clearly state the purpose of the event, including the date, time, and location. Include details about the function's theme or activities, and mention any special guests or highlights to generate interest. Lastly, provide RSVP information and express enthusiasm for their attendance. End with a polite closing and your name or the organizing committee's name.