A Student is a person who has enrolled at your institute and you have accepted their application.
The Student doctype maintains detials like personal information, photo, date of birth, address etc. It also records the Guardian and sibling details.
The student is enrolled in a Program when the application is approved. Once the enrollement is done the Student Applicant status is update to Admitted.
New Student Creation
You can also create a student directly from
Education > Student > New Student
After new student creation you can fill all the details and have to enrol into program as well.
You can view every doctype created for a particular student. Eg : Fees, Student Group, etc
Video Tutorial on Student Management