When you turn 18 , the qualifications for SSI change to Adult Status , and depending on the disability , you may or may not still qualify for SSI under the Adult Status .
There are Federal Government programs you may be eligible for such as Vocational rehabilitation , which most likely would cover college tuition , and maybe some extra .
Call SSAs 800 toll free number and inquire , or your Parent could , as they would be your payee , or talk to your schools' physiologist or guidance councilors office .