All annual meetings of the School District shall be held on the second Tuesday of March in each year, at such time of day and place as shall be designated by the Clerk of the District and the notice thereof shall not be less than six nor more than ten days from the date of such notice or warning, and special meetings may be called at any time under the direction of the Trustees or on petition of any five or more legal voters in the District, and the notice for such meetings shall be the same as that herein provided for annual meetings and the notices for all annual and special meetings shall be posted in three or more public places in the District.