Connected by a computer telecommunications network, ninth-graders from eight high schools scattered thousands of miles across Alaska work together, building a robot submarine to gather samples from the floor of Prince William Sound. This is high school science as some teachers and educational reformers today envision it -- centered on student projects that encourage learning by doing...supported by modern technology...enriched by collaboration among students and teachers, both face to face and far apart. This example is drawn from LabNet, a three-year effort funded by the National Science...