Just two more things. I can't find a proper verb to include in 1.
1) Can I officially inform the parents about the existing cooperation between our schools, which will be accomplished (??)through various projects?
2)
As I wrote you or as I wrote to you in my previous email?
3) My sister lives in Rome and would really like his thirteen-year-old daughter and fourteen-year-old boy to attend such a summer course at your school for two weeks. She would also like to know if it would be possible for her to spend two weeks there on her own.
4) Could you please tell me how much the price for their accommodation would be?
1) Can I officially inform the parents about the existing cooperation between our schools, which will be carried out by means of various projects?
2) As I wrote you in my previous email ...
3) My sister lives in Rome and would really like her thirteen-year-old daughter and fourteen-year-old son to attend such a summer course at your school for two weeks. She would also like to know if she would be able to spend two weeks there on her own.
4) Could you please tell me how much their accommodations would cost?