Dan Schneider Denies Sexualizing Young Child Stars On Nickelodeon TV Sets

Dan Schneider has again denied allegations of a toxic workplace while he was at Nickelodeon ... including claims that child actors were sexualized on shows he created.

A rep for the veteran TV producer -- the man behind hit Nickelodeon shows like "The Amanda Show" and "Drake & Josh" -- says there's no truth to the allegations floated in 'Quiet on Set' ... asserting that numerous adults were involved in overseeing all aspects of the shows, with everything being approved by the network itself.

The statement further clarifies that scripts for the shows underwent a rigorous vetting process, requiring approvals from both NYC and L.A. networks ... and if anything was found to be inappropriate it would've been flagged and blocked by multilayered scrutiny.

The statement reads in part ... "Remember, all stories, dialogue, costumes, and makeup were fully approved by network executives on two coasts. A standards and practices group read and ultimately approved every script, and programming executives reviewed and approved all episodes."

As well as ensuring the scripts were kid-appropriate ... parents, caregivers, and their friends would be on set every day watching filming and rehearsals, Dan's camp adds.

Schneider's statement comes after the first 2 installments of ID's doc, "Quiet on the Set: The Dark Side of Kids TV," premiered ... in which claims surfaced that some of his shows appeared to sexualize child stars like Ariana Grande and Jamie Lynn Spears in specific scenes.

The doc also delves deeper into claims of sexism, racism, and inappropriate behavior involving underage stars and members of the shows overseen by Schneider -- as well as allegations from crew members they were continuously asked to massage Schneider on set.