The phrase "higher order" refers to something that is more advanced or more complex than others. It implies a level or degree above the normal or basic level. Full definition
Lesson activities incorporate the use of higher order thinking skills and essential skills, activities enhance the links between reading and writing the the development of key language skills. (tes.com)
Second, he wrote, there is a need to support the teaching and development of higher order thinking skills both technologically and traditionally. (citejournal.org)
We find that gifted, talented and high ability scholars who engage in higher order thinking, a commitment to excellence and creative problem solving skills are most successful in our academy culture. (eayoungacademy.com)