I went to school with quite a few mature students. They were all great classmates.

Lots of seniors go because they want edification. Never a stupid idea.

Now if you are asking financially, that depends on the time and cost of the program and the anticipated market for that kind of work. Do the math. Cost of school (tuition, books, materials and living expenses x number of years of the program) - opportunity cost of opportunity cost of not working your current gig during those years, + the estimated differential of what you reasonably think you could make for the remainder of your new career before retirement.

Every program, job market and tuition support is different. Do the math with your own local info.