Find Phone number, Location Address and all other information of Montessori Preschools in Karachi Harvard School System Karachi on Branches.pk, Pakistan’s Largest Branches Directory. You can contact them directly on Phone number +92-345-9002790, or you can visit their location in person, address location is: Bunglow No. 3, FL-3, Gulshan-e-Iqbal - 4, Karachi.