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Description

Odorgonno Senior High School (Great OSSA) is a Ghanaian based senior secondary school.[1] Its motto is Nobis Nitendum est, which is Latin and means Ours is to Strive.[2] As of 2017, it has 2,671 students and 183 staff, including 53 non-teaching staff.[2] On July 1st 2023, the school's academic prowess was showcased as it emerged victorious in the National Science and Maths Quiz (NSMQ) regional qualifiers, alongside other esteemed institutions like Ashaiman SHS, Labone SHS, and Achimota School.

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Closed
Open hours today: 7:30 am - 3:30 pm Toggle weekly schedule
  • Monday

    7:30 am - 3:30 pm

  • Tuesday

    7:30 am - 3:30 pm

  • Wednesday

    7:30 am - 3:30 pm

  • Thursday

    7:30 am - 3:30 pm

  • Friday

    7:30 am - 3:30 pm

  • Saturday

    Closed

  • Sunday

    Closed

  • September 8, 2025 10:21 pm local time

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