批改

批改	pī gǎi	to mark (homework, exam scripts etc) / to correct and criticize (an article) / to check / to correct / a correction (to a piece of writing)
批	pī	to ascertain / to act on / to criticize / to pass on / classifier for batches, lots, military flights / tier (for the ranking of universities and colleges)
改	gǎi	to change / to alter / to transform / to correct