The document provides an introduction to the revised National Curriculum for Biology in Liberia for grades 10-12. It includes messages from the Minister of Education emphasizing the importance of the curriculum revision for education transformation and rebuilding the education sector after civil war. The introduction outlines a student-centered approach and lists the aims and objectives of enabling students to demonstrate and apply biological principles and develop scientific skills. The curriculum is organized into semesters covering topics such as the branches of biology, cell structure and function, classification of living things, tissues and multicellular organisms.