| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| CHSPE Preparation Book 2019-2020: CHSPE Study Guide and Practice Test Questions for the California High School Proficiency Exam | 978-1-63530-316-2 (1-63530-316-8) | 2018 |
| CHSPE Preparation Book 2020-2021: CHSPE Study Guide and Practice Test Questions for the California High School Proficiency Exam | 978-1-63530-670-5 (1-63530-670-1) | 2019 |
| HISET 2019 Preparation Book: Study Guide and Practice Test Questions for the High School Equivalency Test | 978-1-63530-347-6 (1-63530-347-8) | 2019 |