If I was a teacher I would simply purchase a month-to-month subscription and not pay for your service during June/July or July/August(depending on your school system) when there are no school days.
From a personal standpoint I would consider offering some kind of "account parking" so that teachers can suspend their account for a 2 week period during christmas break. It never 'feels right' to pay for a service when you're not able to use it.
If I was a teacher I would simply purchase a month-to-month subscription and not pay for your service during June/July or July/August(depending on your school system) when there are no school days.
From a personal standpoint I would consider offering some kind of "account parking" so that teachers can suspend their account for a 2 week period during christmas break. It never 'feels right' to pay for a service when you're not able to use it.