Twelve identical kits, a laminated instruction card, and surprisingly durable glue sticks that survive small hands make this the clear pick for classroom use.
The included storage tray is a genuinely nice touch — kits pack back into labelled slots at the end of a lesson, which matters more than it sounds like it should when you're managing 24 students at once.
The single available animal design is the main limitation; teachers running multiple sessions will want to supplement with a second kit for variety.