Harry falls madly in love with Malfoy. They get caught many times in Snape's room, getting frisky.

Crabbe and Goyle are caught snogging in the many empty classrooms.

Hermione runs off with several house elves and sets up a Snow White scene in the forest.

He-who-shall-not-be-named chokes on a snack food item and goes down during the whee hours of the night.

The head master joins sides with evil and has the students experimented on and tested.

The rest I will save for you. . . . .more detail in the book. . . .