Here is the second part of the email.

1) We plan to involve a group of 18/20 students in year 11 who are high-achievers and are willing to devote sufficient time and energy to
the project.
2) By the way, is the French school or your school acting as a coordinator of the project?
3) Do we have to fill in an application form (how do you call the form you need to fill in order to be granted the funds for the project?)by/within a precise date?
4) As we have never been involved in a Comenius project before, I'd like you to inform me about all the formalities we, as partners, will need to deal with.(can you help me finish the sentence?).

1) We plan to involve a group of 18 to 20 students in year 11 who are high achievers and are willing to devote sufficient time and energy to

the project.

2) OK

3) Do we have to fill out an application form by a particular date?

4) As we have never been involved in a Comenius project before, I need to know about all the formalities we, as partners, will deal with.

Sure, here are the possible completions to the sentences:

1) We plan to involve a group of 18/20 students in year 11 who are high-achievers and are willing to devote sufficient time and energy to the project.
To get the answer to this question, you can refer to the email or any documentation provided by the sender. It should mention the number of students that will be involved and the requirements for their participation in the project.

2) By the way, is the French school or your school acting as a coordinator of the project?
To get the answer to this question, you can refer to the email or any documentation provided by the sender. It should mention which school is taking on the role of the project coordinator.

3) Do we have to fill in an application form (how do you call the form you need to fill in order to be granted the funds for the project?) by/within a precise date?
The term used for the form you need to fill in order to be granted funds for a project is typically referred to as a "grant application form" or simply an "application form." To know the precise deadline for submitting the form, you can refer to the email or any documentation provided by the sender. The deadline should be mentioned explicitly.

4) As we have never been involved in a Comenius project before, I'd like you to inform me about all the formalities we, as partners, will need to deal with. (can you help me finish the sentence?).
To complete the sentence, you can say:
"As we have never been involved in a Comenius project before, I'd like you to inform me about all the formalities we, as partners, will need to deal with, such as project meetings, reporting requirements, financial procedures, and any other administrative tasks involved in the project."