YOU SAID:
Hi I graduated grade 6 today!
INTO JAPANESE
こんにちは私は今日6年生を卒業しました!
BACK INTO ENGLISH
Hi I graduated 6th grade today!
INTO JAPANESE
今日は6年生を卒業しました!
BACK INTO ENGLISH
I graduated from 6th grade today!
INTO JAPANESE
今日は6年生を卒業しました!
BACK INTO ENGLISH
I graduated from 6th grade today!
Come on, you can do better than that.