! Interpret data with caution.
NOTE: The distribution of graduates among the various levels of mathematics courses was determined by the level of the most academically advanced course they had completed. Graduates may have completed advanced levels of courses without having taken courses at lower levels. Academic levels are labeled according to the most commonly known course at that level; courses with different names or on topics of different but similar academic difficulty may be included under these rubrics. See Appendix B: Supplemental Notes for more information on course classifications. Race categories exclude persons of Hispanic origin.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Education Longitudinal Study of 2002 (ELS:2002/04), "High School Transcript Study."