Well Knight Errant is not supposed to be your average law enforcement program. That would be closer to Hard Corps Inc. (The lower cost Ares security corp) Knight Errant has been elite since they started (Damien Knight spent the first year and a half that he owned Ares solely working on Knight Errant and personally making sure that it got that reputation), that's been their main selling point ever since.
Knight Errant also seems to train more rounded personnel. Sure their officers will have a designated area to be skilled in, but they generally make sure that their officers are trained at least minimally in several areas. Hard Corps generally gets the people that couldn't hack it as KE officers.
With the emergence of AR and general advancements in technology, I would imagine that the training would have to take longer than it does today. I would wager that between the advancements and KE's more expanded curriculum and stricter pass requirements at least 6-8 months and closer to a year before the officers graduate the academy. To further complicate matters, you have the standard post-academy on the job training which usually takes 3-5 months now (I think 16 weeks is most common). I could see KE pushing this up as well just to insure that they manage to keep their reputation as the best of the best.
After all, with Seattle being a major corp (and deniable asset heavy) city, it is highly in the best interest of Ares to keep their subsidiary in a position to uphold the law (or fail to do so if their competitors are getting hit).
That said, KE was a private security force beforehand and they did have to juggle around a lot of personnel. I believe one of the books mentioned them letting the LS officers requalify in waves to relieve the low man power. In addition I know I read somewhere that they've been hiring temporary workers as well until they get everyone trained up to their liking. Also keep in mind that a lot of LS officers just up and quit when asked to retrain, especially the veteran officers that felt insulted by it.
While any given officer probably wouldn't spend 2+ years in retraining, I could see the whole process of retraining/dropping the unworthy taking that long. Especially when you add in that they are still having to maintain all of their private contracts around the city and most likely shifting around (and possibly training/promoting) Hard Corps Inc. agents to assist with things as well.
Here's my standard Knight Errant officer template (Using the previous one as a base).
Knight Errant Patrol Officer
* Armor: Patrol Armor (Includes Armored Patrol Jacket, Patrol Helmet, and Armored Skin Lining) (9/9)- Treated as 8/8 for encumbrance
* Weapons: Ares Predator IV [Electronic Firing, Biometric Safety], 2 Clips Stick-n-Shock, 2 Clips Takedown* (+0DV/-2AP)
* Commlink: Novatech Airware with Emerald City OS^ (F: 3 R: 3 Si: 3 Sy: 5) with Basic User+, Encryption 5, Scan 5, Noise Analysis 3, Weapon Watcher 3. ^Custom KE Operating System
* Peripherals: Patrol Glasses [Image Link, Smartlink, Flare Comp., Visual Enhancement 3], Patrol Earbuds [Spatial Recognizer, Audio Enhancement 3],
AR Gloves,
* Gear: 2 doses of Jazz, Flashlight, Gas Mask, 1 Trauma Patch, 1 Stim Patch (Rat: 4), 1 iBall , Biomonitor, Handscanner (Cyberware 6, MAD 3, Olfactory 6), 2 metal restraints, 10 plastic restraints, Chisel, Maglock Passkey Rating 3.
* Vehicle: 2 beats cops share a GMC Calvary^ w/ 1 Medkit, built in Commlink (same model), 1 MGL-12 (24 CS/Tear Gas Grenades), 1 Enfield AS-7 (2 Drums shells, 1 Drum APDS slugs), 1 HK-227X (3 clips of Stick-n-shock), 1 Parashield Dart Rifle (10 Darts of Narcojet)
^GMC Calvary is a a slightly slower but more heavily armored patrol car when compared to the Patrol 1.
Stats (All at 3 exc. Agi 4, Int 4, and Wil 4)
Skills:
Firearms 3, Unarmed 2, Running 2, Climbing 2, Dodge 3, Heavy Weapons 1 (Grenade Launcher +2), Exotic Ranged Weapon: Dart Rifle: 2, Negotiation: 2, Intimidate: 2, Leadership: 2, Pilot Ground Vehicle: 2 (Patrol Car +2), Perception 3 (Visual +2), Computer 1, Data Search 2, First Aid 2 (Gun Shot Wounds +2), Electronic Warfare 1, Hardware 1.
Their general tactics are to use the shotgun, tear gas, or SMG to suppress and area until a RRT (Rapid Response Team) can arrive to provide back up.