This is alarming but not particularly surprising to me, if the culture of education is similar between the US and Canada. Judging by this piece and one I read hear a few days back [1], there may be more similarities than I'd thought.
Ed school for far too many is a compelling choice for people who want a relatively easy college degree. I don't want to diss the countless teachers who choose that route out of genuine passion and love for education and knowledge, but we don't do a whole lot to filter for these people.
And it's an incredible shame, because my brief two year teaching career convinced me that it's one of the most demanding career paths a person could choose. I'm a lead engineer today and was once a startup founder, and neither job comes close to the stress, the emotional demands, the direspect, the time demands, the politics, the motivational skills, and the relationship building teaching required of me.
We act like it's such a big mystery why we have such problems in education. To me it's pretty simple:
1. It's an extremely demanding job that's only becoming more demanding with the constant shifting of accountability (i.e. blame) onto the teachers.
2. Teacher prep is largely horrible. Many ed schools will take anyone with a heartbeat, and highly selective alternative prep programs like Teach For America (of which I am an alum) give people minimal training in comparison.
3. Segregation, poverty, and policy create a situation where the students in the greatest need are the worst-served. This is what really kills our system, because students of privilege often have enough advantages to make out okay even in spite of the first two issues.
No amount of draconian accountability standards, school privatization, or winner-take-all compensation schemes are going to fix these things.
There is some hope though, if we're willing to reach for it. We have a lot of human capital in our education system, but I think we're applying it poorly. Instead of feebly demanding that everyone suddenly become an 10x teacher, we should find better ways to utilize the competent (if not universally brilliant) people we do have. Reduce teaching load and scale back the job to something people can excel at without having to be a martyr.
[1] https://medium.com/precarious-physicist/enoughs-enough-6c56a...
[2] http://www.washingtonpost.com/blogs/answer-sheet/wp/2013/05/...