Sick leave application format is available for schools, colleges, and offices. Get the tips to write the application for taking sick leave as a student, teacher or employee along with samples. A sick leave application for school is a formal request to the class in charge or school principal requesting leave for a particular duration due to health issues. Application for Sick Leave – Sample Sick Leave Application for School/ College/ Office By Kshitij Tarun April 8, 2023 Learn how to write a sick leave application for school with clear and concise language. See examples of different types of leave applications for various illnesses and situations.