Dear (student's name): I am pleased to confirm your acceptance of an internship as (Title) in the (Department Name) with (Organization Name). Important information that should be in an internship offer letter.Qualifications. To qualify for a Riverside internship, you must be at least 18 years old and currently enrolled in college in good standing. You should submit your internship acceptance letter with your internship report in your university if you attend any internship. The document is an acceptance letter from a company for a student's internship. All students must obtain a pre-approved internship placement, before completing application and making a LiveScan appointment.