Open Procedure Pursuant To Art. 71 Of Legislative Decree 31 March 2023, N.36 For The Conclusion Of A Four -Year Framework Agreement With A Single Economic Operator Pursuant To Art. 59 C.3 Of Legislative Decree 36/2023, Divided Into Two Lots, For The Assignment Of The "Specialist Assistance Service In Favor Of Students With Disabilities Attending Secondary Schools And The Sp Service Service