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.
If you need more comprehensive testing on Math and Language Arts check out Achieve Testing through Oases.