Two-part carbonless forms perform two jobs in one step - the white first part contains "blockout" on all names to protect confidentiality of those signing out or in.
The yellow second part provides an automatic duplicate record.
The right side of the set is glued together as an additional confidentiality measure, protecting against peeking inside.
There are Parent/Guardian Editions, for adults to sign children out. There are designs for the Student Editions, for students to sign themselves out. And are designs for Visitor Editions. Choose the right style based on your school's procedures.