Investigation Student Trainee
Drawn directly from OPM FedScope (June 2026), this page tracks headcount, average salary, tenure, and pay comparison for the Investigation Student Trainee occupation series (code 1899).
The verdict
In the Investigation Group family, Investigation Student Trainee counts 8 employees, a smaller, specialized federal occupation at 0.0% of the federal civilian workforce, and headcount declined 11.1% from the prior period; pay averages $46,610, which pays below the federal-wide $117,339.
- Employees
- 8
- Share of workforce
- 0.0%
- Avg salary
- $46,610
- Avg tenure
- 2.1 yrs
FedScope read on Investigation Student Trainee (thin series)
Federal agencies employ 8 people in the Investigation Student Trainee occupation (OPM code 1899), accounting for 0.0% of the total federal civilian workforce of 1,953,300 for the June 2026 reporting window. Headcount in this occupation moved down by -11.1% versus the prior period, though at this small a headcount, year-to-year swings can reflect a handful of hires or departures rather than a broad hiring trend.
The average salary for Investigation Student Trainee is $46,610 per year. Salaries moved down by 0.0% from the prior period, a small shift, within the range of normal year-to-year rounding rather than a broad pay-table change. Average length of service in this role is 2.1 years, a comparatively short average tenure, which can reflect faster turnover, a competitive private-sector alternative, or a newer program still building up its workforce.
Code 18, the Investigation Group family, is where the federal government classifies Investigation Student Trainee alongside 19 related occupations. Candidates browsing USAJOBS for Investigation Student Trainee postings should also review these sibling occupations in the Investigation Group family.
Within the Investigation Group family, Investigation Student Trainee ranks #20 of 20 by headcount, accounting for 0.0% of the family's combined 209,389 employees.
Salary context · lean-pay series
How Investigation Student Trainee pay compares to the federal average of $117,339
Occupation Average
$46,610
Federal Average
$117,339
vs. Federal Avg
-60.3%
Where Investigation Student Trainee ranks on lean federal pay
Its average salary of $46,610 is higher than 4% of federal occupation series (21 of 541). The highlighted bar marks where Investigation Student Trainee sits in the federal pay distribution.
Average-salary distribution across all 541 federal occupation series; Investigation Student Trainee ranks higher than 4%.
Related Occupations in Investigation Group
10 other occupations in the same family
| Occupation | Employees | Avg Salary | Avg LOS |
|---|---|---|---|
| Compliance Inspection and Support | 53,444 | n/a | 9.8 yrs |
| Criminal Investigation | 44,633 | n/a | 14.5 yrs |
| General Inspection, Investigation, Enforcement, and Compliance Series | 44,491 | n/a | 14.8 yrs |
| Customs and Border Protection | 27,421 | n/a | 14.7 yrs |
| Border Patrol Enforcement Series | 21,781 | n/a | 13.3 yrs |
| Consumer Safety Inspection | 5,242 | $74,073 | 15.3 yrs |
| Aviation Safety | 4,206 | $143,216 | 15 yrs |
| Investigative Analysis | 2,129 | n/a | 15.9 yrs |
| Import Compliance Series | 1,104 | $126,314 | 16.5 yrs |
| Wage and Hour Investigation Series | 885 | $120,994 | 17.1 yrs |
Nationwide peers near this thin headcount
Two peer sets for Investigation Student Trainee outside the Investigation Group family, on headcount and average salary axes that vary across all OPM occupation series.
Similar thin headcount
Nearest employee counts in other occupation families (8 here).
Similar lean average salary
Nearest average salaries in other occupation families ($46,610 here).
Key takeaways
- Investigation Student Trainee pays below the federal average by 60.3% ($46,610 vs $117,339 federal-wide), at the 4th percentile for pay among 541 tracked occupation series.
- A smaller, specialized federal occupation by headcount: 8 employees, 0.0% of the federal civilian workforce, and headcount declined 11.1% from the prior period.
- According to OPM FedScope June 2026, Investigation Student Trainee ranks #633 of 663 federal occupation series by headcount (the same employee_count ordering as our occupations directory).
- Within the Investigation Group family, Investigation Student Trainee ranks #20 of 20 by headcount, accounting for 0.0% of the family's combined 209,389 employees.
OPM FedScope and Federal Workforce Data figures are federal civilian headcounts, average salaries, and length-of-service statistics - not job-quality scores, hiring advice, or a live vacancy listing. A larger or higher-paid agency is not a better employer.