I wouldn't call this a liberal lesson, but a lesson in poor teaching. This lesson evokes three major elements that Christians should consider:
1. What does it mean to be liberal/conservative.
2. What is the role of saying any pledge
3. What is the role of understanding the civics of another country.
I disagree with the assessment that this is a liberal agenda. Political liberalism is not cultural studies or even saying the pledge to another country but a philosophical framework that is rooted in a modernistic worldview. Does one have to embrace modernism to teach this lesson? No!
The next question is whether it is ever right to evoke the pledge. Early Baptists had difficulty in pledging any allegiance to anyone other than to God. When listening to the report, someone questioned whether it was right for an "American" to say the pledge to another country, because we are Americans. Several Baptist groups evoked the same mentality about a Christian pledging allegiance to the state, when we are citizens of a greater kingdom. I think we can say that any pledge above God is immoral, but it is not immoral to say a pledge to another country.
While the teacher overstepped her bounds in how she taught the lesson, reciting the pledge of a country is not evil nor liberal. We should encourage our students to learn about other countries and their civics. There are clear civics and cultural lessons that can be learned by this lesson. Teachers should not avoid talking about cultural element for fear of offending a few hyper-american-exceptionalists.
Finally, the solution offered by the representative is more big government. Instead of letting the local board handle the issue, he has proposed a more top down approach to their education instead of letting local school boards make their own decisions. I find it ironic that Republicans who argue against big government offer big government solutions to local problems.
This was not liberalism in full force, rather this may demonstrate the hyper-American centric worldview of many conservatives. Many conservatives believe liberals are anti-American while liberals believe that conservatives are arrogant-American. I think there is truth in both sides. Conservatives need to realize that we are just another Nation under a mighty God. Liberals should realize that we are a nation who has accomplished some great things. Yes, we are both evil and have done good. Because we are both evil and good, we should be much more humble lest we use our good attributes to eventually do greater evil.