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  2. School security - Wikipedia

    en.wikipedia.org/wiki/School_security

    Electronic lock on a school arts room in Hong Kong. School security encompasses all measures taken to combat threats to people and property in education environments. [1] One term connected to school security is school safety, which is defined as the sheltering of students from violence and bullying, as well as exposure to harmful elements such as drugs, guns and gang activity. [2]

  3. Skeleton key - Wikipedia

    en.wikipedia.org/wiki/Skeleton_key

    The normal key on the left will open only the lock that it goes to, but the skeleton key on the right will open any lock with this particular keyhole. Two warded lock keys and a homemade skeleton key A skeleton key (also known as a passkey [ 1 ] ) is a type of master key in which the serrated edge has been removed in such a way that it can open ...

  4. Padlock - Wikipedia

    en.wikipedia.org/wiki/Padlock

    Padlocks with modular locking mechanisms can often be taken apart to change the tumblers or to service the lock. Modular locking mechanism cylinders frequently employ pin, wafer, and disc tumblers. Padlocks with modular mechanisms are usually automatic, or self-locking (that is, the key is not required to lock the padlock)

  5. Child safety lock - Wikipedia

    en.wikipedia.org/wiki/Child_safety_lock

    A child safety lock is a special-purpose lock for cabinets, drawers, bottles, etc. that is designed to help prevent children from getting at any dangerous things or contents. Young children are naturally curious about their surroundings and will always explore, but as they may be unaware of dangerous substances or situations, the results can be ...

  6. K–12 education in the United States - Wikipedia

    en.wikipedia.org/wiki/K–12_education_in_the...

    The public education system does provide the classes needed to obtain a GED (General Education Development) and obtain a job or pursue higher education. [58] The largest public school system in the United States is in New York City, where more than one million students are taught in 1,200 separate public schools.

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  8. Trapped-key interlocking - Wikipedia

    en.wikipedia.org/wiki/Trapped-key_interlocking

    The key will then remain trapped until the gate or door is closed. A personnel or safety key can be released from the access lock, this ensures that the gate or door can not be closed and the initial key released until this personnel or safety key is returned (assuming that no duplicate keys are available). This provides increased operator safety.

  9. High school in the United States - Wikipedia

    en.wikipedia.org/wiki/High_school_in_the_United...

    High school or senior high school is the education students receive in the final stage of secondary education in the United States. In the United States most high schoolers are ages 14–18, but some ages could be delayed due to birthdays. Most comparable to secondary schools, high schools generally deliver phase three of the ISCED model of ...

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