I found a school that offer opportunities in internship Detective:
It´s INTERN – DETECTIVE UNIT OFFICE OF THE DISTRICT ATTORNEY MONROE COUNTY, PENNSYLVANIA
Purpose To expose the student to real time, real world experience in the field of criminal investigations as performed by a county detective unit. Although the student will primarily work with a police detective, the student will also spend time with an Assistant District Attorney in the prosecution of a criminal case. Additionally the student will work with the Victim / Witness Assistance Department.
The internship program runs a minimum of 12 weeks and requires the student to work a 40 hour work week (generally 0900 hrs to 1700 hrs). Starting and ending dates will be established by the intern’s university. The intern will be assigned to a primary county detective. That primary county detective will supervise the intern. Although the intern will generally work with the primary detective, from time to time the intern will be assigned to others within the District Attorney’s Office, to include other detectives, prosecutors (Assistant District Attorneys) and, for at least one day, personnel from the Victim / Witness Advocacy unit.
During the first week, the intern will meet with the primary investigator and be given a tour of the Courthouse and Detective Center. The intern will meet with the District Attorney, Office Manager, Victim / Witness Coordinator, Chief County Detective and each of the Unit's Detectives.
This program has been implemented to allow a student in the Criminal Justice field to observe and participate in all facets of a Criminal Investigation and due process through the Criminal Court System.
More information in: http://www.monroecountyda.com/internshipopportunities/interndetective/