PHILADELPHIA (WPVI) -- A Philadelphia robotics team is celebrating a world championship.
Central High School's "RoboLancers" won this year's "FIRST Robotics Competition" in Houston.
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Six hundred teams from around the world qualified for the four-day event.
After qualification rounds, Central's team was picked as part of an alliance with teams from Israel, Missouri and Arizona.
The RoboLancers' strong defense helped the alliance win.
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It marks back-to-back success for Central.
Judges picked the RoboLancers for the "FIRST Impact Award" last year, recognizing their work to spread STEM opportunities in Philadelphia.