Foreign students who wish to attend secondary school in Singapore can do so if they meet certain requirements. Here are some key points to consider:

1. Age Requirements: Foreign students must be between the ages of 13 and 18 to attend secondary school in Singapore.

2. Eligibility: To be eligible for admission to secondary school in Singapore, foreign students must hold a valid Dependent's Pass, Student's Pass or Immigration Exemption Order.

3. Language Proficiency: Singapore's secondary education is conducted in English, so foreign students should have a good grasp of the language. Some schools may require additional proficiency in Chinese, Malay, or Tamil, the official languages of Singapore.

4. Application Process: Applications for admission to secondary school in Singapore are typically made through the Ministry of Education's online portal. Parents or legal guardians of foreign students should provide all necessary documentation, including passport details, educational transcripts, and vaccination records.

5. Fees: Foreign students are required to pay school fees in Singapore, which can vary depending on the school and the type of pass held by the student. There may be additional fees for textbooks, uniforms, and other school-related expenses.

6. Curriculum: Singapore's secondary school curriculum is rigorous and emphasizes core subjects such as English, Math, and Science. There is also a strong emphasis on character education, with a focus on social and emotional learning. In addition, secondary schools offer a range of academic and non-academic programs, including sports, arts, and community service.

Overall, Singapore offers a high-quality secondary school education, but foreign students should be prepared for the challenges of studying in a foreign language and cultural environment. It is important to research schools and understand the application process thoroughly before enrolling in secondary school in Singapore.