Hot off the heels of its freshman success “Gossip Girl,” the CW is once again hitting the books.

Netlet has greenlit the pilot “How to Teach Filthy Rich Girls,” based on the book by Zoey Dean. Alloy Entertainment, which published the “Gossip Girl” books that led to this season’s CW show, is also behind the “Filthy Rich Girls” franchise.

Meanwhile, CW also unveiled a revised midseason sked that creates a drama night on Mondays and moves original episodes of “Pussycat Dolls Present: Girlicious” to Wednesdays. “Reaper” bounces to Tuesday, while Sunday’s 9 p.m. comedies are swapped.

Rina Mimoun (“Pushing Daisies”) will write and exec produce the pilot for “Filthy Rich Girls,” while Alloy’s Leslie Morgenstein and Bob Levy will also exec produce.

“Filthy Rich Girls” revolves around a young woman who’s fired from her job as the assistant at a glossy tabloid mag. She’s then hired to serve as a live-in tutor and life coach for the teen granddaughters of a cosmetics magnate. Show’s lead must win over the girls while navigating Palm Beach’s high society and dealing with her own personal issues.

Dean is also the author of “The A-List” series of New York Times bestsellers, which are in development for a feature adaptation at Universal.

Alloy continues to expand its youth-oriented empire; ABC Family recently picked up the limited series “Samurai Girl,” based on another of the company’s literary franchises. On the feature side, Alloy is behind “Sex Drive,” which just wrapped production, alongside Summit Entertainment.

Mimoun previously worked with the CW on “Gilmore Girls”; her credits also include “Everwood,” “Dawson’s Creek” and “Jack & Jill.”

“Gossip Girl” originals return to the air on Mondays at 8 p.m. starting April 21; “One Tree Hill” shifts to 9 p.m. on the night as of April 7. That displaces originals of “Pussycat Dolls,” which move to the Wednesday 9 p.m. slot (where “Pussycat Dolls” repeats have aired) behind “America’s Next Top Model.”

On Tuesdays, “Reaper” moves to the 9 p.m. slot starting March 25, behind “Beauty and the Geek.” “Reaper” has only recently moved to Thursdays at 9; that slot will be reinhabited by “Supernatural” starting April 3. On Sundays, “The Game” — expected to be back next season — takes over the prime 9 p.m. slot, flipping with retiring laffer “Girlfriends,” which moves to 9:30.