Removing wallpaper from a high ceiling can be a challenging task, but it is possible with the right tools and techniques. You will need a sturdy ladder, a wallpaper removal solution, a scraper or putty knife, and a spray bottle filled with water. Start by scoring the wallpaper with a tool or a knife to allow the solution to penetrate the adhesive. Then, apply the solution with the spray bottle and let it sit for a few minutes before scraping off the wallpaper. Repeat the process until all the wallpaper is removed.