How to make someone's birthday special at school? * Sing Happy Birthday! Singing is the classic way of celebrating happy birthday and can fit into any birthday celebration routine. Singing has many benefits for pupils when done in the classroom. Singing releases endorphins and creates a happy, energetic feeling for those involved, making it a great way to boost the classroom attitude. Singing has also been proven to help increase confidence, self-esteem and a strong sense of belongingness. So be