We extend our sincere appreciation and acknowledgement to the Gauhati University for providing the guiding framework for the creation of this book. This book has been meticulously crafted in alignment with the Gauhati University Choice Based Credit System (CBCS) 2020 syllabus for the regular course, specifically catering to the course code EDU-SEC-5014.Our gratitude extends to the academic experts and curriculum developers at Gauhati University who have diligently designed a syllabus that reflects contemporary educational needs and aspirations. Their vision has steered the direction of this book, ensuring its relevance and applicability to the academic journey of students enrolled in the EDU-SEC-5014 course. We also extend our thanks to the educators, researchers, and scholars who have contributed to the creation of this book. Their dedication to academic excellence and their commitment to shaping the learning experiences of students have been instrumental in shaping the content you are about to engage with.