I am not 100% on this but i think you would want a Large depth of field.
Explanation:
it can take up a great deal of time in class.
it can be distracting in the middle of a lecture.
it can cause the student to miss information.
<span>In the admin console, three settings than an admin can set for the entire domain in gmail are to enable users to set their own themes in gmail, allow users to delegate their mail out to other users, and enable users to have the ability to import their email from other platforms like yahoo, web mail, or hot mail.</span>