Next, clearly state your child's name and the school they are leaving. To withdraw your enrolled child from public (this includes magnet or charter schools) or private school, we offer you, below, sample letters of withdrawal.The purpose of this form is to formally notify the school district of a child's withdrawal from public school. Learn how to write a professional and effective letter of withdrawal from a private school with our step-by-step guide. Includes ChatGPT prompt. Detained under the Mental Health Act 1983; detained in a secure setting.