I urgently need your to revise these statements. Thank you.

1) Our science teachers are enthusiastic about the idea of carrying out a common science project in English with both your and the French school.
2) However, the head of our science department would like to discuss the theme in further detail with you before deciding which students to include in the project.
3) I therefore gave her your email so that she can get in touch with you directly.
After that, I think we could start with the email partnership among our students (I need to be more precise).
4) Let me know if your French partner is willing (has agreed) to use English as the lingua franca for the Comenius project.

1) Our science teachers are enthusiastic about the idea of carrying out a common science project in English with both your school and the French school.

2) OK

3) Therefore, I gave her your email so that she can get in touch with you directly.

After that, I think we could start with the email partnership among our students (I need to be more precise).<~~Please let me know what "email partnership" means to you in this context.

4) OK

Here is the revised version of the statements:

1) Our science teachers are excited about the possibility of collaborating on a science project in English with both your school and the French school.
2) However, our science department head would like to have a detailed discussion with you regarding the project's theme before deciding which students should be included.
3) Therefore, I have provided your email address to our department head so that she can directly communicate with you.
4) Please inform me if your French partner has agreed to use English as the lingua franca for the Comenius project.