crammer:
(plural: ‘crammers; pronunciation: the letter ‘c’ in this word is said with a ‘k’ sound)

a crammer staying up late cramming
a student who prepares for an exam hastily by trying to by-heart as many answers as possible just before the exam;
a teacher who prepares a student in a hasty way by making the student memorise as many answers as possible just before the exam, usually those students that have failed the same exam before,

crammers cramming just before the exam
Ethan is a crammer; he neglects his studies most of the time but just before exams, he stays up whole night and crams as much as possible, and surprisingly enough he passes the exams!
In the present educations system, more value is given to the grades and so most of the teachers who are basically principled become crammers encouraging their students to mug up and fill in the answer sheets with as much stuff as possible so that students get more marks and they get the credit.
The system of education is in such as a pathetic condition that even three-year-old kindergarten children are made crammers to get admissions into standard nurseries!
And a more common meaning is a printed book that has short answers for a student to cram, to memorise, just before the exam.
