Though highlighting is a common method for studying textbooks, it's usually not very effective for learning.
- Most students highlight too much: experts say highlight 10-15% of the content while students usually highlight 70-80%.
- Because only fragments of sentences are highlighted, when you study the highlighted sections you end up reading the whole sentence for context and then re-read much of the book.
- Highlighting means that your studying is limited to rereading; if you take notes, you can write your notes in formats that can help you learn the material more deeply and test your knowledge. See our webpages on Creating a Concept Map, the Cornell Method of Notetaking, SQ4R for more details. (Links are on the left-hand side of this webpage.)