According to the relevant information, the inquiry shows: No, generally speaking, students from low-income families don't know about going to school, but the teacher must know that because the teacher wants to apply for grants, he will fully understand the students' situation, because only low-income families and families of poor children can apply for state grants. This teacher is the first responsible person, so we should find out if there is one. Of course, if there is a formula, everyone in the school may know it.