- "Hey Driller. Somebody told me they got 6.7% on their Potions II test and got the classification of Troll. Even though it was a difficult exam, it was quite an achievement for him to score that low. He was probably too busy watching anime like you. In that case, he is an absolute troll."
- - Kagami Ochiai, to Driller
Troll (トロル Tororu ) is one of the three failing grades in Minecraftian education, out of the six available grades with this one being the worst. These are commonly given to students who score 20% or lower on a test. Very few characters received a troll grade on an exam; some people like Kagami Ochiai did not know that grade actually existed.
If a student receives a troll grade besides Dreadful and Poor, it means they have failed that subject and cannot continue to honors level.
Kagami mentioned one person getting a troll grade on a Potions test, but doesn't know their name. Another student mentioned to Driller about getting a 9% on their History of Minecraftia test.
- The grade itself comes from the fact that trolls are people who like to annoy others, and in the fact that they are dim-witted.