Jack Whitehall in Bad Education
Some Girls, Bluestone 42 and Bad Education have all been recommissioned by BBC Three.
All three sitcoms will return for new series on the digital channel, which has also ordered two new comedies, 'Top Coppers' and '600 Days'.
'Bad Education' is back for a third series, with star-and-writer Jack Whitehall on board to reprise his role as mischievous school teacher Alfie Wickers.
The critically acclaimed 'Bluestone 42', meanwhile, follows the comedic adventures of a bomb disposal unit based in Afghanistan. The series will be back for six new episodes on BBC Three.
Finally, 'Some Girls' will revisit Greenshoots Academy and its four leading ladies, sixth form students Viva, Amber, Holli and Saz.
BBC's controller of comedy commissioning Shane Allen said: "This raft of new and returning comedy series celebrates how successful the comedy on Three remains and is a timely reminder that we're still very much open for comedy business. To have three comedies hit a third series stride is a monumental achievement."
New comedy '600 Days' will join the trio of comedies and has been commissioned for six episodes.
The series follows straight-laced Luke, who is sentenced to two years in a Young Offenders Institution along with his girlfriend's street-smart brother Jason, and must rely on his buddy to help him get through his jail time.
Finally, another new comedy, 'Top Coppers', has received a pilot order from the channel. The 30-minute episode is described as an action comedy about police detectives.
Shane added: "With 'Top Coppers' and '600 Days' we're backing a new wave of talent as both have sublime casts and are exciting additions to the comedy slate on BBC Three."
BBC Three controller Zai Bennett said: "BBC Three is at the heart of new comedy in the UK and is not only still on air, but thriving. These four deliciously different and brilliantly written series and pilot demonstrate our ongoing commitment to bring our viewers more even more cutting edge, exciting and most importantly of all, funny, comedy this year."
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