Many countries will not accept U.S. student IDs issued by your university as sufficient proof to grant student discounts. The ISIC card, however, will serve this function. Depending on a student's destination, he or she may wish to purchase an ISIC card, which provides benefits such as:
Travel discounts for travel by air, rail, bus, and/or ferry
Reduced rates on some accommodations and admission to various attractions, cinemas, museums
24-hour assistance hotline staffed by multilingual representatives who can help with various emergencies
The ISIC card can be purchased either in the Wild Card UK ID Center or online at http://www.myisic.com.