Can I see if I am qualified for a security clearance even if I am not a Federal employee?
No. It is not possible to "pre-apply" for a security clearance. Not all Federal employees/contractors have security clearances. Individuals who are tentatively selected for government jobs (or as Federal contractors) will be investigated as appropriate. If access to National Security Information is required, you will need to complete a security questionnaire and an investigation will be conducted. If the investigation results are favorable, a security clearance will be granted if appropriate.