From the Hershey park website:
Many people wonder how Hershey Entertainment & Resorts is related to the Hershey Foods Corporation, makers of Hershey chocolate products. When Milton Hershey offered stock in the Hershey Chocolate Corporation in 1927, he segregated the business of making chocolate from his other enterprises. These other businesses were placed under a new corporate umbrella as Hershey Estates, which eventually became Hershey Entertainment & Resorts. Prior to this, in 1909, he created a deed of trust establishing the Hershey Industrial School for orphan boys, since named the Milton Hershey School. The Hershey Trust, as trustee for the Milton Hershey School, owns Hershey Entertainment & Resorts Company in its entirety and owns the majority of the voting stock of the Hershey Foods Corporation, a publicly held company, of which Hershey Chocolate is the largest division.
Today, the profits generated by these entities perpetuate the Hershey Trust, which in turn funds the school.
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