I just recently got enrolled in a education program run by the government that seeks to further educate people with a mainly practical background.
Decided to go for a engineering degree in Electronics as that's basicly the only thing I'm able to apply for, and it's also one of the few things I have interest it......
I could repay a reasonable bit of my mortgage and still have a bit left after fulfilling my education in 3-4 years time.
There have been many discussions about the many ways that this could go wrong from an economic perspective, and most are very real possibilities with an unquantifiable risk factor in today's crazy unstable world.
There have been no discussions about the very real very large obstacle that you will face, the engineering degree itself.
I walked into a Motorola plant in 1972 at the age of 20 and got a job on the assembly line assembling and tuning two way radios for the public safety (police fire and military) market. The plant was new in 1972 and employed several hundred people. All of the products made there were purchased with taxpayer dollars, so the plant itself went through several up and down cycles that tracked the general economy. By the mid 80's I had found my way into an engineering job without an engineering degree. There were a few others like me who had done the same, but it became obvious to some of us that we were endangered species, the first to be let go when there was a downturn, with virtually no way to return when better times returned. The plant had expanded to nearly 5000 people, then contracted to a much smaller size several times during my employment and does not exist today. One of my bosses explained that going to college to get an engineering degree would be my best defense against becoming another unemployed statistic. As much as I had resisted this my entire life, I and a few of my friends accepted the inevitable, and set out to find the shortest path to obtaining an "engineering degree."
Motorola had a company sponsored education plan that was essentially a reverse of what you are being offered. The employee must submit a program of study from an approved college. Once approved, the employee would pay for one or more classes up front which would be reimbursed in full upon completion of each class with a grade, of "C" (80% score) or better. I put each class on a credit card which was paid off after completing a class. There was no time limit for completing the degree, but as with all company policy, it could be amended or revoked at any time. It lasted until about 2005 though.
Seven people started the quest by filling out applications, and getting info from every college or "approved institution" within driving distance of where we lived. Five of us actually started school at the same college because they had engineering classes that were taught at night. Of those five, only two of us survived the first year. I was the only person to finish all of the coursework and walk away with a Bachelor's Degree in computer engineering.
You mentioned fulfilling your education in 3 or 4 years. You also mentioned somewhere in this thread that you are supporting a family. An engineering degree in an electronics related field is not easy. Getting a 4 year degree in 4 years or less while supporting a family is nearly impossible, but obviously doable since I did it. I went to class 4 nights a week from 6 PM to about 10 PM. I did homework for most of the weekend. Fortunately my wife and daughter supported me in this endeavor, because it would have been impossible otherwise. The small private school we chose gave us credit for some of the old classes we took in our past, so I had about 1 year's work of educational credit from my first attempt at college in 1970. These were three of the most difficult years of my life, as there was NO free time. Looking back the education itself (and the second degree I got later on my terms) provided the path for a 41 year engineering career at Motorola with a decent salary. The education allowed me to advance my career much faster than I would have without it. Things would likely been far different if I had not gone down this path.
If you go down this road make sure you know and understand all of the rules imposed by the loan, and by the educational institution up front. What are the penalties for failing to pass a class? What are your obligations if you start school, but do not finish your degree? Are there any time requirements? Every educational institution has different rules, and some have time limits even for their own classes. The school where I later got a masters degree in electrical engineering declared some of their courses "irrelevant" or "obsolete" after six years, so those courses could no longer be applied towards a degree. This was basically a money grab. Some courses may need a refresh with time but the fundamentals have not changed.
I started out by taking one class that I knew that I could pass blindfolded. This turned out to be a very good idea since I had not been in a classroom in 20 years. The next term I did two, and eventually four when they were relatively easy classes. When everyone around you is 18 to 22 years old, and partying on daddy's money is their primary objective, it's not hard to do 10% better than they do, especially when you already understand electronics. I did very well at my second attempt at college. The 1970's attempt when I WAS 18 resulted in me becoming mathematically impossible to graduate, so I got the job at Motorola.
I succeeded and got my computer engineering degree at age 40. Once I worked my way into a research group at Motorola they started pressuring me to get an "advanced engineering degree." I did get a Masters Degree in Electrical Engineering at age 47 after six years of taking a class or two whenever I found something I liked or it fit my schedule.
Whatever you do with the money is up to you, but it should be something that does not require daily, or hourly attention as life and schoolwork will have 110% of your attention. You mentioned a mortgage. If your mortgage allows early payments directly on the principal amount, and your interest rate is higher than the loan rate, do the math to see how much could be shaved off of the total cost of your house if some of the principal amount is paid off early. I bought my house in 1979 when interest rates were 8.5%. Paying extra small amounts toward the principal early in the loan saved me almost 35K on a 40K loan which would have cost me about 140K if I just made all the regular payments on schedule over 30 years. This is a safe "set it and forget it" strategy with a positive yield. I don't know how it works today though.
During the "day trading" days of the late 90's and early 2000's it was possible to make money by buying a stock during lunch New York time, then selling a couple hours later as the trading volume (and price) picked up. 10 cents a share adds up on a $3 stock if you trade several thousand shares a day and do it every day. I had to explain this situation carefully to my boss so that he wouldn't schedule any 1PM meetings. This required a job where you were sitting in front of the computer, with one eye on the real time trading window, and your boss is in on it. We found other cyclic events with a daily, weekly or other period that allowed for nearly foolproof gains, but there could be some real news that changed the game fast......those days are gone forever though.
There may be an option somewhere in between these two extremes, but market conditions change far too fast for me today, so I don't play the game any more.