The Student model contains following fields:

1. first_name - String
2. last_name - String
3. age - Integer
4. grade - Integer

The app contains the following endpoints:

1. /students - GET - Returns a list of all students in the database.
2. /students - POST - Creates a new student in the database.
3. /students/:id - GET - Returns the student with the specified id.
4. /students/:id - PUT - Updates the student with the specified id.
5. /students/:id - DELETE - Deletes the student with the specified id.

This is the POSTMAN collection for the API: https://www.postman.com/bold-moon-966086/workspace/projectplace/collection/22818850-4a2a0c78-275a-4d90-a634-c0015a52a587?action=share&creator=22818850