As of my last knowledge update in January 2022, Mill Hill International refers to the international section of Mill Hill School, an independent school located in London, United Kingdom. Mill Hill School is known for providing education at both the preparatory and senior levels. Here are some key details about Mill Hill International:

1. **Type of School:**
- Mill Hill International is part of Mill Hill School, which is an independent co-educational day and boarding school.

2. **Educational Stages:**
- The school covers various educational stages, including the Pre-Preparatory School (ages 3-7), the Grimsdell Mill Hill Pre-Preparatory School (ages 3-7), the Mill Hill Preparatory School (ages 7-13), and the Senior School (ages 13-18).

3. **Curriculum:**
- Mill Hill School is likely to follow a broad and balanced curriculum. The Senior School may offer GCSEs and A-levels as part of the academic program.

4. **International Section:**
- Mill Hill International may specifically cater to international students, providing them with an environment that supports their academic and personal development.

5. **Boarding Facilities:**
- Mill Hill School, including the international section, offers boarding facilities. Boarding options may include full boarding or flexi-boarding.

6. **Extracurricular Activities:**
- The school is expected to offer a range of extracurricular activities, including sports, arts, music, drama, and various clubs.

7. **Facilities:**
- Mill Hill School is equipped with modern facilities, including classrooms, science laboratories, sports facilities, arts and music spaces, and boarding accommodations.

8. **Ethos and Values:**
- The school's ethos and values are likely to emphasize academic excellence, character development, and a supportive learning environment.

9. **Admissions:**
- Admission to Mill Hill International involves an application process. Prospective students and parents should check the school's official website or contact the admissions office for details on admission criteria and procedures.

10. **Location:**
- Mill Hill School is located in London, United Kingdom.

For the most accurate and current information about Mill Hill International, including details about admissions, curriculum, and any recent developments, it is recommended to visit the school's official website or contact the school directly. School websites typically provide comprehensive information about their offerings, faculty, and admissions procedures.