Roseville is a city in Ramsey County, Minnesota, United States. It is one of two Twin Cities suburbs that border both Saint Paul and Minneapolis (Lauderdale is the other). The population was 36,254 at the 2020 census.
My background is someone who has traveled to Little Diomede. The first step would be to talk to the school about renting a place to sleep. ¶ Second, you would need to fly to Nome on Alaska Air. There is a helicopter service to Diomede. You will probably fly to Wales, Alaska and catch the helicopter there. People are correct that air service is normally once a week. If you go to Diomede you need to plan to stay a while.