You see very little about WWI.
In the US, you're correct, but throughout much of Europe it is still taught much more in depth. One of the reasons WWI is not a big part of the US history curriculum is the fact that the US joined the war late (1917) and while Wilson did play a big role in the peacemaking process following the conflict, the Senate refused to ratify the Treaty of Versailles and subsequently the US never joined the League of Nations. During the 1920s the US economy rose in part of the rebuilding efforts required in Europe, but the US pretty much stayed out of European affairs throughout the 1920s and 1930s reflecting its traditional policy of isolation in regards to the region. Therefore, the impact of the war, while important for the growth of US trade, is not considered as significant in the US as it was in Europe. No fighting was done in the US. Not one factory was bombed. Not one trench was dug. The US lost approximately 120,000 men--and while that number is not insignificant, consider that the Germans and Russians lost close to 2 million men each, the French lost 1.5 million, and the Brits lost close to a million. At the Battle of the Somme in 1916, the Brits lost 20,000 men (roughly 10 percent of US losses)--IN ONE DAY.
Ironically, while WWI is typically not taught in depth in the US, it can be argued that the only real winner in that conflict was the US. The US economy became the largest in the world and New York replaced London as the world's global trade center.
@Saint and Anthony--thanks for sharing the links and sorry if I hijacked the thread. One other series I particularly like is Channel 4's (UK) ten part series The First World War. All of the episodes can be found on Youtube and here's a link to the first episode entitled "To Arms:"
http://www.youtube.com/watch?v=9zViwCUtQ5o