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Summer teaching positions will first be offered to the regular teaching staff upon completion of satisfactory application ( " satisfactory " to be defined by the Summer School Principal ) . Undergrads will be assigned a fixed final project , while grad students are expected to be able to formulate their own questions and devise an interesting project for themselves . If an employee is permanently disabled and unable to return to his / her full duties and responsibilities , the District will make a reasonable effort to find an alternative position if one compatible with the employee 's medical condition can be found . How long does it take to get good at a performance task ? Generating sufficient diversity is a problem because the human body only makes on the order of 106 different proteins , which the immune system must use to construct receptors that can recognize potentially 1016 different proteins or patterns .