10+2: The Great Secret(2001)

Original title: 10+2: el gran secret

At the school in the Country of Numbers, run by Professor Aristotle and his assistant Infinity, the peaceful life of the students is disrupted by the arrival of the Thousand, Aristotle's niece. In addition, due to an injury to the teacher, a substitute teacher arrives at the center, Miss Zenòbia, who will apply her despotism to the classes.