Create PrimarySchool Class

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• We'll build a PrimarySchool class that extends School.

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• Inside the PrimarySchool class, create a constructor() that accepts three arguments

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• Call super on the first line of the PrimarySchool's constructor(). Pass it any arguments that the parent constructor uses.
• Since this is the PrimarySchool class, pass 'primary' as the argument for the level parameter in the parent constructor.

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• Use the remaining argument to set the pickupPolicy property.

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• Since our PrimarySchool class inherits School's properties and getters, we only need to create one new getter in the PrimarySchool class.
• Add this getter to the PrimarySchool class.
• Each getter should return the value saved to that property.