As audiences continue to revisit the life of Michael Jackson through the hit biopic Michael and a growing number of documentaries , former child star Danny Bonaduce is offering a rare firsthand account from long before Jackson became the biggest entertainer on the planet. During a recent appearance on the Pop Culture Retro! podcast, Bonaduce revealed that he attended school with Jackson while both were navigating life as young performers. The Partridge Family star said they first met “on the Columbia lot” while working on separate productions before reconnecting years later at Cal Prep, a school designed for working child actors and entertainers. By then, Jackson was already becoming a major star thanks to the Jackson 5. Bonaduce remembered seeing him at school and recognizing that his classmate was operating on a different level than most young performers. “I see Michael again, and, you know, he was a pretty big star at that point,” Bonaduce said.…