School District 21 has developed a core curriculum based on the Illinois Learning Standards, which are intended to serve as the basis for student assessment in Illinois. The School District 21 curriculum is based on the understanding that, due to the pace of technological change and the development of an interdependent international economy and workforce, we cannot predict the full range of specific knowledge and skills that our students will require for success. At the same time, there are critical basic skills that serve as the foundation for success in reading, writing, and mathematics. By focusing on balanced instruction that includes critical thinking about high-level concepts, instruction and practice with basic academic skills, and a focus on the Learner Qualities, District 21 students will be well-prepared as life-long learners for high school, college, and beyond.

The School District 21 Curriculum goes through a regular review cycle led by the Department of Curriculum and Learning. This cycle includes matching the curriculum's alignment with the Illinois Learning Standards, verification of the degree to which the curriculum is being taught, and ensuring that the best materials are available to teachers and students for different components of the curriculum.