From the 5 grade 12 you must select 1 year rep, 1 president and 1 vice president.
From 3 grade 11, you must select 1 year rep
From 1 grade 10, you must select 1 year rep
From 1 grade 9, you must select 1 year rep.
This leaves 4 students to get the secretary position
Once the secretary position has been selected, levaes 3 students to get the treasurer position
Once the treasurer position selected, leaves 2 students from the social convenor
And then finally, the last student must get the fundraising chair. So;