Abstract: Methods and programs are disclosed for a computer-based teaching method for various subjects, including grammar. The program includes one or more lessons to test a student's skills relative to a particular subject. A database with coded information allows a computer to search the information, such as sentences and word functions provided therein. A guide for identifying the appropriate code for each respective lesson is provided such that as a student progresses through the lessons, the computer searches the database to provide the appropriate information to the student based upon the code of the information and the guide for the respective lesson. Further, the method of coding answers to a test given with the use of a computer program is discussed. Answers given by a student are compared to the correct answers located in a computer database.