I am an American teaching in a US university, and I've noticed that many foreign students come with their own handwriting customs for writing English. In particular I've noticed that Indian students often write the letter 'x' so that it (to me, anyway, and probably to many Americans) resembles an 'n', and makes their work (very slightly) harder to read. (Another example: a Croatian friend of mine wrote his 'q' so that it looked like 'g' to me.)
Should I encourage them to write in an American way? I am especially interested in hearing from foreigners and whether they would have appreciated this. On the one hand I don't want to presume that my culture is superior to others; on the other, they have chosen to study in the US and I would like to help them communicate their ideas with as few obstacles as possible.
Does the answer depend on circumstances (e.g. whether the student is an undergraduate or graduate, whether the student has teaching responsibilities, and where the student aims to work after graduation)?