Don't get distracted by your peers. Your future is
faaaaaaaaaaarrrrr more important. Focus on doing well in your
studies.
Therefore, if you're the type easily influenced by peers, it
would be prudent to hang out with (make friends with) others who
are similarly like-minded who realize the importance of doing well
in your studies for the sake of your/their future.
Make it a point to encourage your friends (the ones you choose
to hang out with) to have as a focal point of your interaction,
your studies. Friendly competitiveness for studies, but with
willingness to help/tutor/support each other in your
work/assignments/tests, can go a long way toward helping you focus
on your studies, and significantly contribute to your results.
And yes, what do you mean you're distracted by Ah Lians?
Distracted because you're feeling sexually attracted to
them (regardlesss of your own gender), or because they make
too much noise with their cacophonous (some would say
'melodious') chatter so you can't focus on listening to the
teacher?
Assuming the latter, you can always ask your form and/or subject
teacher to allow you to sit in front of the class. Explain to them
you feel you need to be near the front to concentrate, and they
will mostly be supportive of your good learning attitude.
