Isla McBean, Jane Hay and Stephen Arrowsmith devised a company called Scotrex to offer all-inclusive lesiure breaks to the Badenoch and Strathspey area, featuring outdoor and environmental activities. They took part in a joint venture with a school from Dubrovnik in Croatia and met their partners in Italy.
This is the second time in two years a team from Highland has won since Golspie High won in Denmark in 1994.
Tricia Shorthouse, marketing officer in Highland and national co-ordinator of the competition, said: "The team gave a very professional presentation to a large audience from seven nations. They recognise the importance of good marketing."