The original sentence for 1) was:

1) The preparatory meeting made clear that the idea to make a project is a result of the desire to become a more European school as well as to get to know how those things are approached in other European countries and to form networks.

Second list of things I need you to check.

1) IMPACT ON PUPILS: (D 5)
- considerably increasing the ability and motivation to use foreign
languages and to apply the skills acquired in science classes
- promoting their key skills for professional insertion (science and
technological competence, computer skills, teamwork and managing) and thus
to increasing students' job opportunities in Europe and all over the world
- contributing to the students` personal portfolio (certificate)
- strengthening the students' confidence in their ability of contributing
within this European framework
- making the students play an active role in creating a more responsible
society
- getting to know more European institutions
Impact on teachers:
- widening their didactical repertoire. Improvement of interdisciplinary
teaching
- motivating them to support other European school projects or school
exchanges
- experiencing being rather a coach or consultant than a teacher
2) IMPACT ON THE SCHOOL
- making the school community aware of the opportunities European engagement
offers and of the fact that sustainablility is a European subject
- stimulating interest in pupils or parents to join further European
activities
- bringing the field of substainability with its possible implications
concerning research, causes and effects the whole school community
Impact on natural parks:
- establishing a partnership with schools furnishing visitor material and/or
conferences/guides
- recalling natural parks to the public interest (press releases)
- creating opportunities of other forms and activities of cooperation

3 answers

The original sentence for 1) was:

1) The preparatory meeting made clear that the idea to make a project is a result of the desire to become a more European school as well as to get to know how those things are approached in other European countries and to form networks.

OK, so the idea is that they develop self-identities not only as Italian or German or French, but also as a citizen of Europe. Right?

How about this?

The preparatory meeting made it clear that one main idea behind this project is that each school can become more of a European school, as well as for students to learn how topics and problems are approached in other European countries and to form networks.
Maybe better:

The preparatory meeting made it clear that one main idea behind this project is for each school to become more of a European school, as well as for students to learn how topics and problems are approached in other European countries and to form networks.
1) IMPACT ON PUPILS: (D 5)
- considerably increasing pupils' ability and motivation to use foreign
languages and to apply the skills acquired in science classes

- promoting their key skills for professional insertion (science and
technological competence, computer skills, teamwork and managing), thus
to increasing students' job opportunities in Europe and all over the world

- contributing to the pupils' personal portfolios (certificates)

- strengthening the pupils' confidence in their ability to contribute ideas within this European framework

- pupils' playing an active role in creating a more responsible
society

- getting to know other European institutions

Impact on teachers:
- widening their didactical repertoire. Improvement of interdisciplinary
teaching

- motivating them to support other European school projects or school
exchanges

- learning to teach more as a coach or a consultant, rather than a lecturer

2) IMPACT ON THE SCHOOL
- making the school community aware of the opportunities European engagement
offers, and of the fact that sustainablility is a European subject

- stimulating interest in pupils and parents to join further European
activities

- bringing the field of sustainability with its possible implications
concerning research, causes and effects, to the whole school community

Impact on natural parks:
- establishing a partnership with other schools and furnishing visitor material and/or conferences/guides

- recalling natural parks to the public interest (press releases)

- creating opportunities of other methods of cooperation