The final step in writing a play is performing it. Hearing it spoken aloud can help you spot parts that need revision. Check with your teacher to determine what level of performance you’re expected to produce. Here are three possibilities:

Get friends, family members, or classmates to act out the play with props in some sort of stage-like environment.
Have friends, family members, or classmates do a table read of your play. In this scenario, you don't need a stage, props, or physical action. A table read will allow you to hear how the dialogue sounds as actual voices read each character's part.
Simply read all the roles aloud by yourself and have fun with the play. As you read, note how the lines sound when they’re performed.
Regardless of the form you find practical, take notes about anything in the play that needs to be changed. Also be sure to appreciate the parts of your play that work well (funny or moving moments, for example).