I have studied in France for a semester, but I do not feel that is sufficient. In all of the French classes I have ever taken, I do not think I have ever learned about any culture but that of France. There are many countries that speak French, but I have never learned anything about them. Spanish teachers must have the same problem. Surely I can not concentrate on all of them, but it has always bothered me that all my knowledge of French speakers' culture is limited to France.
Surely culture is very important to language learning.
It makes the class more interesting. Students will be far more rounded in their knowledge of language if they learn culture that founded it.