| 0 | - | cover | 1 | pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason | Supergirl |
| 1 | - | blank page(s) | 1 | | |
| 2 | Supergirl: Cosmic Adventures in the 8th Grade | credits, title page | 1 | pencils: Eric Jones; inks: Eric Jones | |
| 3 | Supergirl: Cosmic Adventures in the 8th Grade | credits, title page | 2 | pencils: Eric Jones; inks: Eric Jones | |
| 4 | Editorial Credits | credits, title page | 1 | pencils: Eric Jones; inks: Eric Jones | |
| 5 | - | cover reprint (on interior page) | 1 | pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason | Supergirl |
| 6 | - | comic story | 22 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Pat Brosseau | Supergirl [Kara Zor-El; Linda Lee] (origin); Superman; Lex Luthor; Principal Pycklemeyer |
| 7 | - | cover reprint (on interior page) | 1 | pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason | Supergirl [Linda Lee]; Belinda Zee |
| 8 | - | comic story | 22 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Pat Brosseau | Supergirl [Linda Lee]; Mr. Kretch; Belinda Zee (origin; first appearance); Principal Pycklemeyer; Lena Thorul |
| 9 | - | cover reprint (on interior page) | 1 | pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason | Supergirl [Linda Lee]; Mister Awesome |
| 10 | Part 1: Look! Up in the Sky! | comic story | 6 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Travis Lanham | Supergirl [Linda Lee]; Lena Thorul; Belinda Zee; Principal Pycklemeyer |
| 11 | Part 2: With Great Power... | comic story | 6 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Travis Lanham | Linda Lee [Supergirl]; Principal Pycklemeyer; Superman (image only); Belinda Zee; Lena Thorul; Mister Awesome (student, real name unknown); Ms. Bigglestone |
| 12 | Part 3: Powerless! | comic story | 10 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Travis Lanham | Supergirl [Linda Lee]; Ms. Bigglestone; Lena Thorul; Mister Awesome (student, real name unknown); Belinda Zee; Principal Pycklemeyer |
| 13 | - | cover reprint (on interior page) | 1 | pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason | Supergirl [Linda Lee]; Belinda Zee; Lena Thorul |
| 14 | Part 1: Secret Entity! | comic story | 6 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Sal Cipriano | Supergirl [Linda Lee]; Superman (image only); Lena Thorul; Streaky the Supercat (origin); Belinda Zee |
| 15 | Part 2: The Beast Within! | comic story | 8 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Sal Cipriano | Supergirl [Linda Lee]; Lena Thorul; Streaky the Supercat (origin); Belinda Zee |
| 16 | Part 3: The Cat's Tale! | comic story | 8 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Sal Cipriano | Supergirl [Linda Lee]; Lena Thorul; Streaky the Supercat (origin); Belinda Zee |
| 17 | - | cover reprint (on interior page) | 1 | pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason | Supergirl [Linda Lee]; Belinda Zee [Superior Girl] |
| 18 | Graduation Day Part 1 | comic story | 22 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Pat Brosseau | Supergirl [Kara; Linda Lee]; Lena Thorul; Supragirl [Supergirl] (alternate timeline); Belinda Zee [Superior Girl] (first appearance in costumed identity); Principal Pycklemeyer; Comet the Super-Horse; Streaky the Supercat; Superman; Lex Luthor; Mr. Mxyzptlk |
| 19 | - | cover reprint (on interior page) | 1 | pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason | Supergirl [Linda Lee]; Comet the Super-Horse |
| 20 | Graduation Day, Part 2 | comic story | 22 | script: Landry Q. Walker; pencils: Eric Jones; inks: Eric Jones; colors: Joey Mason; letters: Pat Brosseau | Supergirl [Kara; Linda Lee]; Lex Luthor; Superman; Supragirl [Supergirl] (alternate timeline); Comet the Super-Horse; Belinda Zee [Superior Girl]; Streaky the Supercat; Lena Thorul; Mr. Mxyzptlk |
| 21 | Redesigning Supergirl | illustration | 2 | pencils: Eric Jones | |
| 22 | - | blank page(s) | 1 | | |
| 23 | - | promo (ad from the publisher) | 1 | pencils: Eric Jones; inks: Eric Jones | |