Testimonials are a great way to promote the subjects you teach. Students that are undecided on what elective to choose will have the opportunity to read previous students experience.
After each semester give each student a testimonial sheet and have them write about their experience in your class. NOTE: Make sure they sign their name below This “Smart” student. When they are done post them outside and inside the classroom for students and staff to read.
This can also serve as data for you to make adjustments to the course if needed.