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To access Student Attributes click your user name at the top right of the page, and click the Settings option.
You can change the Sort Order by clicking the Sort By Name button, or search for a particular Attribute by entering keywords in the search box and clicking the search button.
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You can nominate an Attribute to be always included in exports of Parents Slips, it's a great way to ensure for example red flags for health issues are always visible.
The Attribute fields will be displayed and can be edited as part of a Student record: