There is a small discount for field trip groups (I believe it is a dollar off per person). Field trips are pre-k through 5th grade, 10 to 100 children and must be scheduled in advance. Adult chaperones still have to pay admission for field trips. I don't think there are any other group discounts available. Their membership packages are pretty good, though.
The price of admission is very affordable,(less than $10) But if you have a very large party they may be able if you contact them directly about it.
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