a sample that they can provide. in many cases the teacher will review the information that you are required to complete in class with a sample on the overhead projector or on a sheet of paper that they printed and gave to each student. if they did not give you a sample copy of the paper to take home you can always ask them to give you a sample. this can prove quite helpful as it sits alongside your computer while you work.
the second place you can look is your school library. this likely has many samples which you can use to compare your work to the work of other 