How much internet data will be consumed when working on Accelerus Light?

We work hard at optimising Accelerus Light so as little data usage is consumed as possible. The amount of data that a teacher will use will depend on many factors but, generally, a teacher can expect that each time they use Accelerus Light it will take around the same amount of data usuage as sending an email. Overall, for the semester, the usage will equate to watching one YouTube video and much less than downloading a movie, for example.