Samu Haber, singer and frontman of the Finnish pop-rock band Sunrise Avenue, has teamed up with WordDive in order to help German high school students succeed in their English final exams. Samu tested and completed the English prep course himself, and now German students have a chance to challenge him and try to complete the courses faster than the famous singer who uses English every day in his work. “I am pleased to be involved in launching a great product with…