This teacher believes that formal writings are never joyful
A smiley face is great when you’re using it in text messages or on social media like Facebook and Instagram, but please refrain from using it in official writing. Emojis have no place in a formal setting. This student’s last paragraph finished with a sideways smile, indicating that she had a bit too much fun writing it.
What a great instructor you have! Formal essays don’t make anybody smile. That doesn’t imply, though, that you may conclude them with a sour expression.