Answer:
[tex]\text{To}\\\text{The Headmaster}\\\text{[School]}\\\text{[School Address]}\\\\\text{Subject: Application for leave of absence}\\\\\text{Respected Sir,}[/tex]
[tex]\text{I am writing to inform you that unfortunately, I will not be able to attend }\\\text{school tomorrow, [Date], due to [explain reason for absence]. I apologize}\\\text{for any inconvenience that my absence may cause and assure you that}\\\text{I will make every effort to catch up on any missed work promptly.}[/tex]
[tex]\text{I understand the importance of regular attendance and I am commited to}\\\text{maintaining good attendance throughout the school year. I will ensure}\\\text{that I communicate with my teachers to obtain any assignments or class}\\\text{materials that I will miss during my absence and will complete them in a}\\\text{timely manner.}[/tex]
[tex]\text{Once again, I apologize for any disruption caused by my absence and }\\\text{appreciate your understanding in this matter. Please do not hesitate to}\\\text{contact me if you require any further information or assistance regarding}\\\text{my absence.}[/tex]
[tex]\text{Thank you for paying attention to this matter.}\\\\\text{Sincerely,}\\\\\text{[You]}[/tex]