diff --git a/student_grade1.csv b/student_grade1.csv
index 6c4c7b8..14d937a 100644
--- a/student_grade1.csv
+++ b/student_grade1.csv
@@ -3,4 +3,4 @@ haena|30|dogok|100|A
 naeun|27|suwon|88|B
 una|28|mapo|73|C
 bum|23|ilsan|83|B
-suho|28|yeoyi|95|A
+suho|18|yeoyi|95|A