Help for purchasing Creative Cloud/Adobe CS6 for schools

I am a lead teacher at a secondary school. We currently have CS3 and a 139 devices. We are comparing the Creative Cloud Suite (preferred) or the Adobe CS6 Collection. We require approximately 600 students to have access to it (we are looking at a per device licence rather than per student). Can anyone give me some help with arranging quite/getting educational discounts etc? I am writing a proposal to hopefully secure some funding for this purchase for our school.