There are two reasons there's lots of special education positions open. The first is that many teachers don't have the necessary endorsements. The second is that many teachers have zero desire to get the endorsements. Special education in many schools is underfunded and under supported. In our overzealous attempt to prevent peoples children from being labeled as different we've hamstrung the programs. Then you have the mainstreaming of severely dysfunctional children in order to make them feel normal. This can cause greater problems for those children and negatively impact the education of every child. I'm not an expert on this topic but I've heard enough about it to see why so many teachers aren't willing to work in special education.
There are plenty of Milwaukee area private options that exceed the outcomes of the public school system for well under $14K.
My wife is a teacher, and a severe behavior problem impacts the entire classes performance, but it takes so much of her attention away from teaching.
Spending per pupil has risen every year over the last 20 in Milwaukee and performance & outcomes have dropped dramatically. Logic dictates that there are many other forces in play.
The education system and the problems therein (i.e., issues affecting student success) are certainly far more complicated and nuanced.
The applicant pool is plenty well stocked, so there is no "shortage" of teachers. What there is, perhaps, is a shortage of qualified teachers in the classroom. In other words, due to budget cuts, layoffs and position cuts (i.e., not hiring a replacement after someone retires or quits), there are not enough employed teachers to adequately teach all the students in the states with a so-called shortage.
But there are plenty of qualified people looking for teaching jobs -- more than enough for current openings and then some. So what this is, is a money problem. There's no teacher shortage, there's a budget shortage. We're not allocating enough funds to adequately fill needs in schools across the country.
Or at least, that's how I see it.