The event scenes are repeatable in each girls' galleries (the school scene is Sarah's 2nd event), but it's true that they currently skip most of the dialogue leading up to the lewd part.
We'll think of a way to solve this, so you can repeat those dialogue parts as well.
In some cases, like Grace barging in on Mia and MC, we'll also consider to add those as random events in the sandbox version of the scene.
Thanks for the feedback :)