You shouldn't make people miss class.
Johanna is friends with Katelyn who is taking a very full courseload and doesn't get much time to see Katelyn.
Johanna wants to see a movie with Katelyn.
Johanna asks Katelyn when she's free to see a movie and picks a time that suits both of them.
Johanna invites Katelyn to a movie at a time Katelyn has class but convinces Katelyn it's not a big deal to skip class once.
Johanna and Katelyn both have a good time seeing the movie together.
Katelyn falls behind a bit in class and gets a slightly worse grade than she would have otherwise.