Since 2007, I teach Maths and Applied Computer Sciences at a public high school in Belgium.
I also administer the school's ELO and write PHP-applications to expand the possibilities of the ELO.
Q&A for professional and enthusiast programmers
Q&A for system and network administrators
Q&A for people studying math at any level and professionals in related fields
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for peer programmer code reviews