is to first help others improve theirs. Whatever knowledge you
give away, you gain back more than twice.
Thus, please do help out more at homework forum 
I respectfully agree what you have said.
When I was in my Secondary School days, I gave tuition to my
classmates who were struggling with their schoolwork. Over a long
period of time I realised that what I'd taught them seems to
'reinforce' in me. It's a win-win situation where my classmates and
me benefited; they can clear their doubts when coming to questions
they didn't know how to do, and I can reinforced what I'd learnt
during lesson.