Hi Jake!
We don't necessarily keep a database of district employee salaries/benefits. We do have a Composite Rate sheet that we require each district to submit for each employee that will be charging to one of our grant programs as the composite rate (whole employee cost) is the rate we reimburse to a district. We can get a pretty good idea of the salary information for each employee and since it's submitted ithrough Formstack we can export and sort in any number of ways including by district, general job categories, full time/part time, etc. You can see the form here if interested: Composite Rate Form (Full & Part Time) - Formstack.
The information collected in the composite rate form for benefits is somewhat limited as although we can see the costs associated with the benefit we don't ask for the healthcare, retirement, etc "plan" name. I think we may have done some informal inquiries in the past. We've seen districts themselves query each other on benefit information - some have taken a lead on this.