Commonwealth v. Wynton W.

A juvenile was charged with possession of a dangerous weapon on the grounds of a school in violation of G.L. c. 269, 10(j) when a knife, a recent birthday gift from his father, dropped out of his pocket during shop class and had been seen by the instructor who reported the juvenile to the dean. At issue was whether a knife that was not a per se dangerous weapon enumerated in G.L. c. 269, 10(b), could constitute a "dangerous weapon" as that term was used in section 10(j), when that knife was not being used in a dangerous manner. The court held that the phrase "dangerous weapon," as used in section 10(j), must be interpreted as incorporating the common law definition of that phrase. The definition included knives that were "designed and constructed to produce death, or great bodily harm" but that were not necessarily stilletos, daggers, dirk knives, or the other objects listed in section 10(j). Such knives were dangerous per se under the common law and thus prohibited from schools under section 10(j). The court also held that, although it appeared unlikely that the two-inch folding knife carried by the juvenile constituted a dangerous weapon within the common law definition, the court remanded to the Juvenile Court for further proceedings to determine the design, purpose, and construction of the knife.