I've been checking out the TechnoKats
history project lately, for a bit of nostalgia. They've got all the past year's manuals, competition results, news articles, etc. dating back to Maze Craze in '92.
The listing for on the awards from the National Championship in '98 has team 23- Boston Edison Company & Plymouth North High School (Plymouth, MA) listed as the Chairman's Award Winner.
Not much more info than you've found out so far, other than that they are/were from Plymouth, MA, not Boston.