I work for a company that organizes trips for school groups, mostly bands and choirs. WDW is our most popular destination, but we go other places, too (New York, Chicago, Boston, Washington, Nashville, New Orleans, etc.). If you are talking about a large group traveling together, there are many travel companies that specialize in school group travel. They can be helpful in getting group rates and even organizing special activities like private meals and rides before park opening or after park closing. I'd be happy to give you more information, or just do a google search and get some quotes from several companies.