Superadmin need to login in School Software
Then go to System Settings > Student Profile Update.
Enable Allowed editable form fields and then click to Save button.
If you do not want to allow any field to be updated in the student profile page, you can inactive it from Allowed Edit Form fields on student profile option, Inactive field will not appear in the student profile page.
After Enabling Allowed editable form fields, an Edit icon will appear in the student profile page.
If you set Allowed Editable form Fields Disabled then student profile page can not be edited.