While BPSS is the foundational clearance level, other roles may require higher security clearances such as Counter-Terrorist Check (CTC), Security Check (SC), or Developed Vetting (DV). This article compares BPSS with these higher levels, outlining the additional checks and requirements involved. We discuss the process of progressing from BPSS to higher clearances and the circumstances under which each level is necessary. Checkback provides services that extend beyond BPSS, supporting organizations and candidates through more advanced vetting processes.