Find School Friends 

 Registers 

These are the best sites for finding old school friends - they are free, so you might as well register at all of them, to be thorough:

• Facebook - the new MySpace, and far, far better (and a touch more mature)
• Reunion.com- over 33,000 schools, over 34 million registered users!
• GradFinder - over 190,000 schools, colleges and universities listed
• Alumni.net - 70,000 schools listed... and it is free (but the sign-up process is tedious and painful)
• Classmates.com - free registration, quite big
• SchoolNews.com - Lists over 30,000 High Schools and Colleges in the United States and Canada. Free listing of your name, email address and other bio data in their directory.
• Reunion Hall
• YearBookHigh
• Alumni-Find
• Curious Cat
• Personal Pages - student pages hosted by colleges and universities
• Teacher Reviews - just that, might be amusing for current students

 School Directories 

These are databases giving contact details for schools and universities

• American School Directory - details on 104,000 schools, not free
• Search for Public Schools
• American Universities - big list on a single page

 International 

• Friends Reunited - Australia & NZ
• Friends Reunited - South Africa
• Friends Reunited - UK & Ireland
• MyOldMate (UK)

Old School Friends - There are many USA organizations that help you reconnect with high school and college buddies / friends / pals / mates / lovers.