# What is a Class, a Lesson and an Exercise?￼

There are 3 levels to the Sensay platform.

Teachers must first create a Class, then a Lesson, then the Exercises.

Every Class has a unique set of Student Accounts that teachers can assign students to.

The lesson unit is how you can organize and group several different exercises.

Exercises are the speaking assignments that a teacher can create for their students. There are 5 types of speaking exercises that a teacher can choose from and students get instant feedback when they submit their recording.

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