This study examined the relationship between 11th grade students' final semester grades and their scores on the California Standards Tests (CSTs) in English/language arts and mathematics. The results showed a moderate correlation between English/language arts grades and CST scores, but a very low correlation between mathematics grades and CST scores. The study concludes that consistency needs to improve between classroom grades and standardized test results, and recommends further research into effective teaching practices and a larger study across multiple schools.