The City of Rock Island requires PROMETRIC Test Scores of 75% or better to be submitted for a Mechanical or Electrical License. The PROMETRIC Exam Registration Form is available in the Inspection Division. The City of Rock Island will need to complete the Sponsor Information section of this form. The Mechanical or Electrical candidate must then contact PROMETRIC to schedule the exam. Once the candidate has complete the exam, it will take a few weeks for the City of Rock Island Inspection Division to receive the test scores.