Delaney card

[2] One side of the card has the school year's months and days printed in columns so that the teacher can keep track of the student's attendance.

[2] The Visual Seating Plan card system was invented and implemented by Edward C. Delaney, a Harvard University graduate, and teacher at DeWitt Clinton High School in the Bronx, who died in 1969.

"The cardinal sin was to treat a student like a Delaney card,"[1] recalled a teacher at New Utrecht High School.

[1] Delaney cards often appear in works of fiction set in the New York City public school system.

The Delaney system also makes an appearance in the 1965 novel (and the 1967 film version of) Up the Down Staircase by Bel Kaufman.