A document or set of documents usually providing guidance for teachers and instructors on approaches and procedures for a successful planning and implementation of the curriculum at school, local or national level. Guidelines can focus on a specific learning area or subject (e.g. health education curriculum guidelines), a particular educational level (e.g. curriculum guidelines for preschool education), a specific group of learners (e.g. learners with special educational needs, minorities, immigrants) or more broadly on the curriculum (e.g. curriculum, instruction and assessment guidelines). Curriculum guidelines can provide ideas, suggestions and recommendations intended to help teachers to make informed decisions, or be more prescriptive and detailed specifying the content, activities, tasks, and materials to be used by teachers.