I use mine as page markers in my Filofax. They are small enough that they don't stick out too far and get destroyed (one of my most hated things is ragged page markers). The tab set itself is also small enough that it can fit into my Filofax so it's always at hand when I need it. Perfect.
These are the perfect size for school - they'll tuck into your binder or pencil case. Although I'm pretty sure everyone you know will try to steal them. So be careful.
Pick up one of each set of these Sentimental Circus Tab Sets for $4.25USD each!