Look for cheaper schools. In-state school are usually much cheaper than private/out of state schools
Look to get as many college credits as you can in HS.
a)Your state may have a “running start” or “dual enrollment” program where you can take college courses for free in HS
b) Take AP or IB classes and do well on the AP/IB tests so you can get college credit
Look for scholarships
a) Apply to colleges where your stats are significantly above average to get merit scholarshops
b) Look at Net Price Calculators on colleges to see if you would get need based financial aid
c) Look for colleges with auto-scholarship based on gpa/sat http://automaticfulltuition.yolasite.com/
Have your child study for SAT on Khan Academy
Go to community college for two years, and then transfer to a state school