I came across a sentence in a reputed grammar book today that read like this -
This category of students have not developed their reading skills.
I know that the sentence sounds right and I've followed a similar structure myself multiple times while talking to people but for some reason, I felt that there was something wrong with the way category of was used here. Since we are talking about the students here and not the category, shouldn't the sentence be -
The students of this category have not developed their reading skills.
To give you a bit of perspective - the author had divided all the students in 4 categories, depending upon their reading skills, in the preceding paragraph and in this one, he was talking about the second category of students.