How do I save the data entered in my student's Markbook? I can't see a Save button.

The data saves as it is entered.

It will flash yellow and return to grey once the data has been saved.   If for some reason it doesn't save, the field will turn red to alert you.

It's important to note that unstable or intermittent / glitchy internet connection can have an effect on data entry, so it pays to ensure you have a strong and stable connection.