United States Marine Raider stiletto staples at the throat was to prevent the sharp knife from slashing through the sheath. Unfortunately, these staples could severely scar the stiletto blade. It is believed that these sheath variants evolved by trial and error, as the late issues had both staples and plates. The U.S. Marine Raider stiletto was designed for one purpose: killing the enemy, and its design was not compromised. The stiletto was a finely designed, almost delicate, single-purpose weapon, which did not include a variety of other tasks normally associated with a machete or utility knife. Due to the thin tip, even thinner than the
Lisa Gets an "A" of the episode. Following its home video release, "Lisa Gets an "A"" received generally positive reviews from critics. Warren Martyn and Adrian Wood of "I Can't Believe It's a Bigger and Better Updated Unofficial Simpsons Guide" described it as "A fabulously defining moment in Lisa's life, showing what happens if you let your guard slip." They continued by writing "What makes this work even more is the false ending which shows that everyone in Springfield is as adept at predicting Lisa's morality as the viewers are." They concluded their review by calling it "An absolutely inspired piece of comedy." Colin