I called today with a similar question...I will have 3 kids, ages 11,10 and 7. The 7 year old will be going into 2nd grade next year. Anyway, I was looking at the Oceans Discoveries program but it states a minimum grade level of 3rd grade. I called and asked the cast member if it would be a problem for my 2nd grader to go to the class and she said no. She said the grades/ages are provided as a reference...so that parents can make a judgement call on the content vs. the age. She said that all 3 of our kids could go to the class.