Hi Janet, I work in the government sector as well, so I am guessing there isn't much of a budget for this (if any). :)
If you're piloting this with a small group, I'd recommend going the DIY 360 route using something like Google Forms or Microsoft Forms. They're easy to set up, free, and let you tailor everything to your 12 leadership competencies. Use a 5-point scale (think: “Not Yet Developed” to “Expert/Role Model”) and throw in a few comment boxes—because numbers without context are like karaoke without lyrics: confusing and awkward.
For honest feedback, aim for at least 5 raters per group, with 3 as the absolute minimum. That way you keep things anonymous and avoid turning the feedback report into a detective game.
It’s also worth doing a quick kickoff or intro message to explain the purpose—this is for growth, not grading. That helps people engage with the process instead of bracing for impact. A short guide or mini-training for both participants and raters is also a good move—just enough to cover what the competencies mean, how to give behavior-based feedback, and how not to turn it into a roast.
If you ever want something a bit more polished (automated reports, fancy dashboards, etc.), there are also great paid tools out there like TruScore, ZengerFolkman, or Leadership Circle that work well with small groups. You can also go with a coach/facilitator/consultant for a custom option. I can give you the name of a person I have worked with before if you want.
Happy to share templates and collaborate if you're headed the DIY route!