USA Computing Olympiad

http://www.usaco.org/

The USACO supports computing education in the USA and worldwide by identifying, motivating, and training high-school computing students at all levels. 

IEEE TryComputing Web site

The IEEE has a new Web site about computing as a career. It is targeted at pre-university students.

    http://www.trycomputing.org/

I like the career discovery page. 

    http://www.trycomputing.org/discover/career-finder

A HUGE list of opportunities for students, including scholarships

    http://trycomputing.org/inspire/computing-student-opportunities

Some good lessons 

   http://www.trycomputing.org/inspire

Top 5 Programming Tools for Kids

http://www.linuxlinks.com/article/20121110070931617/ProgrammingToolsKids.html

The programming languages and associated tools featured in this article aim to create new ways of helping students create projects that appeal to younger minds.

They look at Scratch, Hackety Hack, Processing, Alice and Greenfoot.