Before tutoring you often pre-test a student to discover their areas of weakness, so how about a warm up quiz from Khan Academy before the pre-test?
Have students take the quick quiz for the school year they have completed to get the mind moving before a session or test. These quizzes have hints and reminders so are not designed to be used as a gauge for knowledge or performance.
If you need to pre-test students and create targeted learning plans from their results then check out a system like Oases that offers testing and automatic learning plans together with their scheduling and invoicing software.
Biology
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Chemistry
If you need more comprehensive testing on Math and Language Arts check out Achieve Testing through Oases.