How the Broadway version differed from the Off Broadway version

“Spring Awakening” has changed in small ways and improved in large ones since it opened last summer Off Broadway at the Atlantic Theater Company. It has moved further away from the Wedekind play, but only scholars are likely to care that a key plot turn, a sex scene with the central female character, the pubescent Wendla Bergman (Lea Michele), has been thoroughly softened from confused ambiguity into a consensual act...Most significant, the performances of the actors in the central roles of the anguished teenagers — Ms. Michele as the inquisitive Wendla; John Gallagher Jr. as Moritz Stiefel, the goof in mortal fear of failing grades and the mysterious blue legs that haunt his dreams; and Jonathan Groff as the free-thinking heartthrob Melchior Gabor — have become deeper and sharper.

http://theater2.nytimes.com/2006/12/11/theater/reviews/11spri.html?pagewanted=2&sq=spring%20awakening%20off%20broadway&st=cse&scp=2