On-line Journals for High School Students

Infinity The online version of the University of Queensland maths journal for high school students. For a printed copy of this or past journals, email Dr. Diane Donovan.
ZiMaths Many of the articles in this journal are real gems. Published by the University of Zimbabwe to provide enrichment for their high school students.
The Right Angle The high school journal of the Mathematics Department of Texas A&M University
MathTalk From the Maine School of Science and Mathematics
Ivar Petersen's MathLand Not really a journal, but a large collection of wonderful articles, emminently suitable for high school students.
Devlin's Angle Keith Devlin is the editor of FOCUS, the news magazine of the MAA. Again, not a journal but a collection of very readable articles.