- Italian language + Composition and exercises -- Problems, exercises, etc
- Mental arithmetic -- Problems, exercises, etc
- Mathematics + Study and teaching (Middle school) -- Problems, exercises, etc
- Vocabulary + Study and teaching (secondary) -- Problems, exercises, etc
- Algebra + Study and teaching (Secondary) -- Problems, exercises, etc
- Chemistry -- Problems, exercises, etc
- Spanish language -- Problems, exercises, etc
- Creative writing -- Problems, exercises, etc
- Vocabulary -- Problems, exercises, etc
- English language + Usage -- Problems, exercises, etc
- Spanish language + Grammar -- Problems, exercises, etc
- Arithmetic -- Problems, exercises, etc -- Juvenile literature
- German language + Sentences -- Problems, exercises, etc
- English language + Written English -- Problems, exercises, etc
- German language + Composition and exercises -- Problems, exercises, etc
- Work -- Problems, exercises, etc
- Reading (Primary) -- Problems, exercises, etc
- Narration (Rhetoric) -- Problems, exercises, etc
- Chess -- Problems, exercises, etc
- Leadership -- Problems, exercises, etc
- Korean language -- Problems, exercises, etc