for sure, the more the better. However, that also depends on the purpose of the financial statement. If it is required by school, then usually the school has the instruction on what is the minimum amount. When you face the damn visa officer, the tip is the more the better.
may i know which school are you talking about? is the financial statement required in the application checklist when you submit the application package? Usually, the best way is either to call the school or send a email to clarify your concern.