This is another of the many signs that we are becoming a full-on totalitarian police-state. The tendency for schools to stop teaching and start indoctrinating is one of the symptoms that speak about the disease.
By the way, I went to school in the late 60's and 70's ann although they tried hard to indoctrinate me (for example, about how the progressive tax was so 'fair'), I emerged briefly liberal (primarily about pot) and then quickly shifted to conservative (primarily about guns and taxes). So it didn't take.
If this is not bad enough, I found this out from the head honcho of social studies of our ISD because he ran the "workshop": In our state, the only time the Constitution is studied in school is in 5th grade (one unit under U.S. Government) and again in the 8th grade. Another teacher and I were seemingly the only teachers concerned about the fact that the foundation of our country is taught in only two grades, 5th and 8th.