Someone who doesn't have or is unable to obtain a job offer with much higher compensation in industry. For example, hiring a CS or Math grad as a HS CS teacher

Someone who doesn't have or is unable to obtain a job offer with much higher compensation in industry. For example, hiring a CS or Math grad as a HS CS teacher is more competitive than hiring a French Literature grad as a HS French teacher. The CS grads have a lot of other options and at any fixed compensation you will get much better French teachers than CS teachers.