Do as few teaching related activities as possible during the summer.
The main reason that teachers should stay away from teaching over the summer is that they should try to stay as fresh as possible for the upcoming school year. Yes, teaching summer school or tutoring may be the best way to make the most money for experienced teachers. If money was our main motivator, however, we would not be teachers in the first place. Our performance during the school year is much more important than the extra money that we might earn during the summer. There are plenty of other possible part time jobs that teachers can do that are not teaching related.
I once tutored heavily during one of my summer vacations, and it felt like I was already in the middle of the school year when the next one started. This led to a long year. Teachers’ main priority should be to be at their best during the main school year, not maximizing their part time summer income.
Coming soon: MythBusting common misconceptions about effective discipline