It's great to hear that you're thinking about how to continue using Mystery Science in the years to come!
When you purchase a multi-year membership, you lock in the early-bird discount for each year, making this is a great way to lock in several years of Mystery Science at the current pricing. This discount is contingent on pre-payment.
If you'd like to see a single or multi-year quote for your school, you can find more information on creating a quote here: How do I access my quote or create a new order?