Here are example methods for some of the most common time-thieves. These are unlikely to exactly suit your particular school and situation, and they aren't intended to represent great teaching, but they show examples of the kind of thinking you should apply.
For a discussion of efficient Marking, click here
For a discussion of efficient Meetings, click here
For a discussion of efficient Homework, click here
For a discussion of efficient Filing, click here
For a discussion of efficient Parental Communication, click here.
For a discussion of efficient Lesson Planning, click here
For a discussion of efficient E-Mail Handling, click here
For a discussion of efficent Performance Management, click here
For a discussion of efficient Reports, click here
For a discussion of efficient Parents' Evenings, click here