Thank you for this piece. It's worth reminding students (and ourselves) that every source of information has SOME bias. A lot of times the problem has been that for individuals to speak frankly, they often feel the need to do so anonymously, which allows their views to be more easily dismissed. Mainstream media can essentially also speak anonymously, because any narrative detailing their own particular interest will necessarily be longer and more difficult to follow than it would be about a particular individual.
What's also interesting is that in MSM reporting about education, the voices of "outsiders" are valued -- particularly if those "outsiders" are people who have made lots of money in industry. In the eyes of the MSM, people who've made money at anything must necessarily know more than the people who make a lot less but have dedicated their lives to educating our children.