If one of your student is missing from your list, the first step is to verify with him that he has indeed registered.
If he has but he forgot to choose a school, he will need to go back to his profile and add his establishment in "my info".
He will then be able to register his class list (EXCEPT if he is in IE10, in which case a logistical bug might happen).
If he is registered to the good school but not the correct class, he will need to ask the school administrator to make the change.
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