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SLAS Promotion Velocity Analysis

ALPHA Early Research — AI-Extracted Data

How long do officers spend in each grade before promotion? This analysis computes the time span between grade transitions for all officers where the relevant dates are available.

8.2y
Grade III → Grade II
(1972 officers)
2y
Grade II → Grade I
(1319 officers)
9.7y
Grade I → Special Grade
(376 officers)
20y
Entry → Special Grade (Total)
(376 officers)
Data Coverage: GIII\u2192GII spans available for 1972 officers (SP + GI + GII); GII\u2192GI for 1319 (SP + GI); GI\u2192SP for 376 (SP only). — as at 01.01.2026

Promotion Time Distribution

Avg: 8.2y | Median: 8.2y | Range: 6y–24.7y
6-8y
1101 (55.8%)
9-11y
841 (42.6%)
12-14y
25 (1.3%)
15-17y
3 (0.2%)
18-20y
1 (0.1%)
24-26y
1 (0.1%)

Promotion Speed by Entry Cohort

Entry CohortOfficersAvg YearsMedian YearsTrend
1990-1994110y10y
1995-19995810.6y10y
2000-200436810.3y10y
2005-200944110.1y10y
2010-20146427.1y7.2y
2015-20194626y6y

Fastest Promotions to Special Grade

#NameEntry YearSP YearTotal Years
1Mr. M.M.S.S.B. Yalegama1998201618.3y
2Mr. Gunadasa Samarasinghe1998201618.3y
3Mr. M.H.M. Zammeel1998201618.3y
4Mr. C. Jayasuriya1998201618.3y
5Mr. A. Vimalenthirarajah1998201618.3y
6Mr. A.B.I. De silva1998201618.3y
7Mr. A.W.R. Wimalaweera1998201618.3y
8Mr. G.H.M.A. Premasinghe1998201618.3y
9Mrs. P.P. Damayanthi1998201618.3y
10Mr. P.S.P. Abeywardhana1998201618.3y

Time in Current Grade

Special Grade
4.5y
avg (376 officers)
median: 4.2y
Grade I
5.1y
avg (943 officers)
median: 3.3y
Grade II
3.9y
avg (653 officers)
median: 4.3y
Grade III
3.9y
avg (641 officers)
median: 4.4y

Data Notes

  • Grade III → II spans are available for SP, GI, and GII officers (1,972 of 2,616)
  • Grade II → I spans are available for SP and GI officers (1,319 of 2,616)
  • Grade I → SP spans are available only for SP officers (376 of 2,616)
  • Officers still in their entry grade (GIII) have no promotion dates to compute spans from
  • "Time in current grade" measures how long each officer has held their current grade as of 01.01.2026