This book reveals how underachievement is linked with several aspects such as motivation, anxiety, attitude, cognitive ability, self-efficacy and learning strategies. We need to go beyond the mere categorization of students as successful or unsuccessful to identify if there is any sense of underachievement associated with the student. The book tries to emphasize how reversal of underachievement is absolutely essential and can play a crucial role in elevating performance of the students to higher levels where the process can become a perpetual joy. Use of mother tongue is suggested to effectuate reversal of low achievement, specifically in learning English as a second language and is proposed as a beneficial practice in classroom situations.