YOU SAID:
I'm in science class right now.
INTO JAPANESE
私は今、理科の授業にいます。
BACK INTO ENGLISH
I'm in a science class right now.
INTO JAPANESE
私は今、理科の授業に参加しています。
BACK INTO ENGLISH
I am currently attending a science class.
INTO JAPANESE
私は現在、理科の授業に参加しています。
BACK INTO ENGLISH
I am currently attending a science class.
You've done this before, haven't you.