[Your Name]
[Your Address]
[City, State, Zip Code]
[Email Address]
[Phone Number]
[Date]

[Teacher/Coach’s Name]
[School/Team Name]
[School/Team Address]
[City, State, Zip Code]

Dear [Teacher/Coach’s Name],

I am writing to inform you that I will be unable to attend [class/practice] on [specific date(s)] due to my participation in a [sports event/competition]. The event is scheduled to take place in [location], and I will be representing [school/team] in [specific sport or event].

I apologize for any inconvenience my absence may cause and will make sure to catch up on any missed work or practice upon my return. If there are any assignments or tasks I need to complete before or after the event, please let me know.

Thank you for your understanding and support. I look forward to representing [school/team] and doing my best in the competition.

Sincerely,
[Your Name]