new classes and new grades in the CSV file will be created automatically on the fly
1. Import Students
2. download a sample student csv file
"Class Student Number" will be auto generated by "Grade" + "Class with Grade" + "Student Number within Class"
Ex: "5A01"(Class Student Number) = "5" (Grade) + "A" (Class with Grade) + "1"(Student Number within Class)
"email" of each student must be unique
"Student Permanent Reference Number" of each student must be unique
3. upload CSV file
4. Submit
5. [Pls ignore for now]