High school graduates have been given unsecured loans to go to college - sometimes graduating with a degree that does not bring an income that allows for the timely repayment of the loan. If we are willing to burden 18 year-olds with $100k of unforgivable debt to get a college degree, why not offer them $10k-$20k loans to start a business?
Similar terms to current student loans would apply. One significant change I propose is a cap on accrued interest and/or no compounding interest. Interest is applied only to the principle and payments are applied to principle first. Payments would be deferred for a set amount of time - between one and five years - perhaps with the option to begin repayments earlier.
High school graduates would fill out the FAFSA and submit a business plan and receive a loan to start a business instead of go to college. Perhaps trade school or vocational programs are involved in the plan, but the idea is to promote self-reliance and entrepreneurship.
A go-getter with a pressure washer and a pickup truck can be a high return investment both in terms of economic return and in terms of benefit to their community.