Maths Olympiad preparation can be for student of any grade as nowadays we have a lot many Olympiads may it be national level or international level and covering all the subjects. It is to be chosen by student to apply for which subject or which they have the interest. The classes are conducted as per the requirement of student either individual or a small group. The number of days in a week they want to attend just depend on students.
The classes for maths Olympiad include the topic explanation, examples understanding, practicing few questions and then after the test conducted for the same topic. Which helps the students to understand the concept better, solving examples and the then practising on their own with confidence.
Most of the students send me the pdf of the book which they refer for particular exam and we just start preparing according to the same.