- Diploma or degree in your field (2 to 4 years)
- $4,000 to $12,000 a year
- Master's degree, expected in academic subjects
- $8,000 to $15,000 a year
- Teaching certificate for college faculty
- A few hundred to about $3,000, often paid by the college
- Years of industry experience
- No cost, you were being paid for it
Roughly, all in
$1,000 to $81,000
Tuition, fees, exams and kit. Not rent, food or travel
The low end is a tradesperson who was paid a wage all the way through an apprenticeship, so the only money out of pocket was a few hundred dollars in registration and exam fees, and whose college then pays for the teaching certificate. Colleges hire trades and technical instructors on experience, not on schooling. The high end is a four year degree plus a two year master's degree, which academic subject departments expect, plus a teaching certificate you pay for yourself. The cheap door needs something you cannot buy: five or more years of current hands on experience doing the work, which is why nobody walks into this job young.
This is one of the cheaper teaching paths, because the expensive part is work you were already doing for a salary.