I like the franchise idea, huh?
I’d stick it in the bank and live off it until I finish my degree, or, actually, until I’m gainfully employed*. At that point, whatever’s left over, if anything, would go toward paying off student loans.
*HA!
They say gold is at a 30-year high. That tells me that the suckers who bought in 1980 are just now breaking even. 
My cousin owns a couple of Jimmy Johns (sort of a Subway-type sandwich shop franchise) and he earns some good money. However, there is a lot of work involved - hiring reliable employees, keeping everyone honest, keeping places up to snuff with regards to cleanliness, ordering supplies, cash deposits, etc.
It is very much hands-on to make sure profits stay up, and even though he might not have to be physically at each location every working hour, he does need to be able to pop in several times a day, and be there to cover a manager/employee who didn’t show up, take care of emergencies, etc. A two-week vacation is a luxury for him and needs to be planned with military precision - getting some family member he trusts to basically fill in his shoes while he is away.
You’re supposed to say “and the rest of it, I’d just squander.” []
Half goes to my wife, to do with as she sees fit.
The other half buys me another muscle car. 
I would use at least 10,000 and take a course on how to day trade and swing trade the Forex. I’d possibly take another 10,000 and look for some precious gemstones or art. Then, I’d spread the rest around ETF’s and stocks.
Bank of America. BOA has a book value of $20/share, but is trading for $9. For comparison, Wells Fargo has a book value of $23 and trades at $28, JP Morgan has a BV of $44 and is trading at $40.
It’s a stock that took a $12.5 billion charge this quarter to clean up more of their mortgage problems and will take at least another $8.5 billion charge once the court(s) approve the mortgage fraud settlement, but in the long run, all this will pass and be forgotten and BoA will be in the $20’s-$40 range w/in a few years.
Regardless, for a TBTF bank, at $9 and less than 1/2 book value, it’s a steal. Not even Citigroup is that underpriced (BV of $54, price per share $38).
Use it for the next couple years of vet school (sadly, 100k is less than half of what I expect to spend for tuition and living expenses). Interest rates for federal loans for vet students are 7-8% depending on the loan type, mostly 8%. This, despite low default rates among graduate and professional students, half that of college students who are paying much lower interest rates.