Afro-Academic, Cultural, Technological & Scientific Olympics
The Afro-Academic, Cultural, Technological and Scientific Olympics (ACT-SO) is a year long enrichment program designed to recruit, stimulate, improve and encourage high academic and cultural achievement among African-American high school students.
http://www.actso.homestead.com/whatisactso.html

Craftsman / NSTA Young Inventors Rewards Program
The Craftsman / NSTA Young Inventors Awards Program challenges students to use creativity and imagination along with science, technology, and mechanical ability to invent or modify a tool. The competition is open to all students in grades 2-8 in the United States and the U.S. Territories.
http://www.nsta.org/programs/craftsman/

Dropping In a Microgravity Environment
The Dropping In a Microgravity Environment (DIME) program allows high school-aged students to work in a team to research microgravity, develop a hypothesis, and write a proposal for a microgravity experiment. If selected, the team then designs their experiment, builds it, and sends it to NASA Glenn in Cleveland, Ohio for operation in the 2.2 Second Drop Tower facility. Four student team members and an adult advisor from each selected team win travel and per diem to NASA Glenn for the three days of DIME Drop Days in late-April. These team members operate experiment in the drop tower and participate in microgravity workshops and other activities.
http://microgravity.grc.nasa.gov/DIME.html

Mathcounts
Mathcounts is the nationwide math coaching and competition program for middle school students. It promotes student interest in math by making math achievement as challenging, exciting and prestigious as a school sport.
http://www.mathcounts.org/

NASA Student Involvement Program 2003-2004 Competitions
The NASA Student Involvement Program (NSIP) is a national program of six competitions for grades K-12 that link students directly with NASA's exciting missions of exploration and discovery. NSIP brings NASA into the classroom by supporting units on space, history, math, language arts, engineering, geography, and the sciences. Each competition features resource guides to help teachers and students conduct research and prepare their projects for submission.
http://nsip.net/index.cfm

National Engineers Week: Future City Competition
A program developed for seventh and eighth grade students to help them discover and foster interests in math, science and engineering.
http://www.futurecity.org/