Debra and Amy provide excellent advise for anyone interested in pursuing a career teaching high school psychology. The full article can be found at http://www.psichi.org/pubs/articles/article_664.asp
For additional information on careers in psychology, please refer to the APA's booklet, Psychology: Careers for the Twenty-First Century. This web-based resource provides detailed information on a number of career options for someone majoring in psychology.
While written more to a college student, this is an ideal reference for any high school student interested in going into psychology.
The booklet can be found on the APA's website at http://www.apa.org/topics/psychologycareer.html