 CKHS teaches grades 09-12.CKHS was for the first time ranked in the top 2% of the nation academically in 2002 and has continued to be through the 2015–2016 school year.CKHS has also garnered two Washington Achievement Awards for closing the Achievement Gap, and has also appeared regularly in the U.S. News & World Report as a nationally ranked school (Data complications with the move to adding ninth graders in 2014–2015 have led to an erroneous omission for the 2016 list).