Примета - a sign, an omen. Подводить (подвести) - to let (someone) down. She has a system of those superstitious rituals (like Artem described) and so far it has never let her down.

Some students put a notebook with lecture under the pillow in the night before the exam. Also they stand before open window and cry out the phrase "Халява ловись". Also they put a coin in shoe. Some student think that this actions can help pass the exam. This action is "система примет".

As you can see the names of things on preparation and taking exams are different in English and Russian. Below is a small "set" of examples. lucky ticket - счастливый билет exam preparation - подготовка к экзаменам exam paper - экзаменационный билет be/strike lucky; run of luck - вытащить . вытянуть счастливый билет Thus the lucky ticket is the same "exam paper" with definite number and definite number of questions. The quantity of questions is varied according to the importance of the subject. The number of questions may have only one question, or all 100 questions. So you may understand their (students) state when they are passing the exam. Most of students like following the good Omens for passing the examination. For example: •   Well rested. •   Having had a filling breakfast or lunch. •   With all materials you will need, including; pencils, pens, reading glasses, calculators, maths kit, exam card/number/registration materials, student number and student card, if required and photo identification, if required Good luck!

Я благодарю вас! Спасибо за вашу помощь! Сейчас фраза ясно как день :=)