Prez isn't the one who separated it was Bunny wasn't it?

With Freamon and Greggs moved to Homicide, Herc and Dozerman join Marimow in the stripped-down Major Crimes Unit. Cutty gets a "custodial" job at Tilghman School mopping up truants, but can't make headway in his efforts to mentor Michael. Bubbles gives Sherrod an ultimatum in an effort to get him back in school as a "socially promoted" 8th grader. Burrell finds a way to sabotage the state-witness murder investigation before the election, a plan that directly impacts Greggs. Prez's struggles in class continue; Bodie finds himself working for a new "company"; Colvin pitches his pilot program to the school; Carcetti meets with a constituency he knows won't support him; Randy faces a dilemma after being busted for his candy scam; Marlo is schooled in poker; Royce antes up in a game he can't lose; and Proposition Joe plays Marlo in a high-stakes heist.

I don't recall, but I remember in the special it was one of the ex-police that did it. And not seperating just one, but the entire grade lever, iirc. The superintendant said she couldn't believe the terms "stoop" and "corner" and wanted to label them something like "enabled" and some other typical school crap.

Omar getting arrested and brought in to the police station by Bunk.

Valchek leaks details of the Braddock case to Carcetti, who contemplates how to best leak it to the press. The ensuing negative attention turns Royce against Burrell, who takes the heat while Rawls comes to the rescue. At school, Prez's reward/punishment program meets with mixed results, and Colvin looks to restore order by separating disruptive "corner" kids from more attentive "stoop" ones. His poster boy for the former: Namond. Chris tries to enlist Michael into Marlo's ranks, spooking Randy along the way. At the detail, Marimow sets up a series of street-level "rips" targeted at Marlo, but his subordinates--and Pearlman and Daniels--are skeptical. Later, Herc and Sydnor plant a hidden camera at Marlo's meeting place, with unexpected results. Burned by Omar, Marlo gets Chris and Old Face Andre to frame his nemesis. Bubble's efforts to keep Sherrod in school only get him humiliated. Angered by Royce's double-dealing, State Delegate Watkins decides to sit out the campaign, sending Carcetti and Wilson rushing to make their pitch. Although Bunk and Freamon come up empty in their body-hunting search, Dukie knows where the "special dead" might be hiding.

One of the better episodes this season. Glad prez is getting a hold of his class and nice to see the chief do something right. Also suprised to see the two detectives not look in the buildings with the big doors saying do not enter.