Correspondence Courses taken through a state-approved extension program must have Counselor and parent approval prior to registration. Students taking coursework that is required for the upcoming school year must complete the course, full or half credit before school starts. In addition, the final exam must be taken and the final grade received before the start of school. This will override the deadline given by Texas Tech University ISD, or other correspondence programs. If the course is not required for the upcoming school year, students will have time as allowed by the correspondence program to complete the coursework.