Too liberal?!?

I normally don't complain or state that things are too liberal, but one thing I just thought of is my pre-high school history / social studies education-- in that we just kept spending time on the pre-Columbian Native American Indians. After a while it got boring, and it convinced me we were never going to learn about any of the stuff that really struck me as interesting (medieval Europe, post-1776 American history, Ancient Greece, WWII, etc.) in history.