Corrections first:
Some people [said--use the present tense "say."] that living in dormitory makes stu
![Drinks [D]](/emoticons/emotion-46.gif)
ying difficult because of late night hours, more temptations to cut class, and more distractions [from studying--leave these words out]. In contrast, others [said--use the present tense "say."] that it helps [u--Never use "u" when you mean "you."] [studying more better--do not use "more" with "better". Remember the adjective takes this form: good, better, best. If something is better, it cannot be more better.].
You second sentence should read: In contrast, others say that living in a dormitory helps you study better.
Personally I think there are as many distractions living in an apartment off camus as living in a dormitory. Good students learn how to avoid the distractions no matter where they live.
Hope this helps.