The video below shows parts of Blue Bird Corporations manufacturing process.  It will help you get an idea of where the strongest parts of the bus are located.  Of course different manufacturers have varying methods.

It is important to know the construction of school buses, so we can attack them in the weakest areas first.  Ultimately they are built like tanks to protect the passengers, which places the challenge on us as firefighters to gain access quickly and extricate rapidly.

Read on.

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