Inquiry About Eligibility to Join Public High School (Grade 12) in Germanyt

Dear Sir or Madam,

My name is [Your Full Name], and I am an 18-year-old student from Syria. I recently arrived in Germany with a language course visa and I am currently enrolled at the Carl Duisberg Center to study the German language.

I have completed all previous school grades in Syria and possess all the necessary official documents and certificates proving my academic background.

After finishing my language course, I would like to continue my education by enrolling in a public high school in Germany, specifically in grade 12.

I would like to kindly ask:

1. Am I eligible to join a public high school in grade 12?
2. What are the exact requirements and conditions for admission?
3. Which documents will I need to provide?
4. Is there any additional procedure I need to complete as an international student?

Thank you very much in advance for your time and assistance. I look forward to your guidance