Answer:
Dear Friend,
I think it would be a good thing for you if you attended extra lessons. Reason being, extra lessons will help you inprove on your school work and tests so you can pass that class. Teachers give you extra lessons to benefit you and test you on whether you take the opportunity to get help and study more, or if you don't take the help and fail your classwork and tests, you'll probably end up failing the class as well. Extra classes in can help high school students to feel more secure in their grasp of the material, which will pave the way for improved self-esteem and better academic results in the long run. I hope I convinced you to attend the extra lessons you get from your teachers, I don't want to see anyone fail when there is help right in front of them.
Sincerely, your friend