In home study, testing is the primary method of interacting and exchanging information with students. However, both the testing methods and the administration of most home study examinations are disappointing. The preparation of most examinations is often an afterthought, with little if any attention given to how such exercises might contribute to a student's educational experience. Feedback is important; it should identify errors, postulate the probable cause of the error, and suggest a solution or a way to improve. Personal computers can be used for testing and feedback if their capabilities are exploited to the fullest, rather than just using them to provide number scores. Computers can be used to write good feedback letters that are well worth it in terms of student satisfaction and course completions. Test formats include: essay, true-false, multiple choice, and open book. Multiple-choice, open-book testing may be most suitable for many home study tests. Better testing leads to better teaching and improves the content and process of home study. (KC)