How to invest 100k
The best way to invest in college for your kid is to buy an investment property and rent it out. You might think I am really crazy to ask you to you to buy a real estate property when everyone is running from real estate.  Go where others are running away from it. Look where others are not looking. Find out the need for a decent rental property in your city or county and start following the real estate market to understand the real activities including the rental market. I would say follow it for 6 months before jumping in with any investment.  And manage your property with good tenants until your kid is ready to go to college. By the time your kid is ready for college, the property would have been paid off by the rents and you can sell the property to send your kid to college.