Class Size: Does It Really Matter? The correlation between the number of students in a class and overall student performance has been a highly controversial topic for some time. Many people wonder whether small class sizes really help students perform better in school or not. I personally do better when I'm in smaller classes and focus better on the topic at hand. According to Jacqui Murray, a teacher of 15 years and writer for Teachers Hub, things like class size, along with others like spending per pupil and the percentage of teachers with advanced degrees, aren't as important as we think. What matters, according to a study he talks about in his article "Bigger Can Be Better: Reasons Class Size