How Might A Free Market Respond To This Situation?

From the Tampa Bay Times:

Robyn White hadn't taught probability and statistics in more than 20 years.

She geared up for the challenge, though, after Wiregrass Ranch High School's sole teacher for the course resigned in late September, and no qualified applicants responded to three job ads.

To make it work, White, the principal, gets to campus around 6:30 a.m. each day to cram in some administrative duties before hustling off to teach three periods. She breaks back to the office by 10 a.m., hoping no urgent emails have hit her inbox before she begins teacher observations...

It isn't easy to lead Pasco County's largest high school while also teaching a full load of classes. But White says her inability to find a certified teacher in one of Florida's critical shortage areas left her little choice. Seven other high schools within a 45-minute drive also need math teachers.

"I would be very uncomfortable hiring somebody with an elementary background or a social studies background for a math job," said White, who taught math 19 years before becoming a school administrator. "They're not going to be what's best for my students. . . . I'm not going to settle."

From what little I have to go on in this story, she seems like a good leader.  She's setting a good example for both teachers and students.