Upload an Excel file with two sheets: Groups and Students.
"Groups" sheet:
| Group Name | Level |
|---|---|
| 1A | highschool |
Valid levels: highschool or middleschool
"Students" sheet:
| Student ID | Student Name | Group Name |
|---|---|---|
| A001 | Juan Perez | 1A |
Group name must match exactly with the one registered in the Groups sheet.