Could change this to "I think you're Super!" and make classroom friend Valentine's out of the idea. Love options that are unisex and not at all suggestive.

Chalkboard and Super Hero Theme Classroom Poster - Heroes - Leaders

Super Hero Chalkboard Theme Classroom Expectations This fun poster is perfect for any classroom. Love this idea for schools using the leader program.

Is your classroom currently a sea of dusty boxes and upside down desks? Here are 21 ways to make it a great place to be. By WeAreTeachers.

SUPER HERO - Classroom Decor : XLARGE BANNER - In Our Class