Above, you will find a document intended to aid structuring evaluation. You will see that there is no evaluation of language. In higher classes,however, when presentations etc. may become part of the evaluation, the language becomes important if the content cannot be communicated adequately. However, if the message is clear and it is only a question of grammar and misspelling, there should not be any noticeable deduction, although misspelling could be seen as a lack of care in the preparation.