First, you need to write according to the format of official document writing. If the title is appropriate, you can use the full name of "Leader of Jiangbei District Education Committee" or designate a leader, and you must indicate the word "letter", and indicate the date of sending the letter and the document number to which the letter belongs. In the text, it is necessary to explain the training of computer teachers, including the time, place, purpose and course of training. At the end of the letter, thank you, such as "sincerely pray for the approval and guidance of the leader", and sign the post and signature of the sender. It is necessary to ensure that the letter format is correct and accurate, the language is clear and standardized, and the professional quality of the sender is reflected.