U can ..but..even u go any schools...in DOha, same..!
i suggest u pay some tips....
Man, u looks like a business man but still in Dr.School ?
Tell me, what u loose if u pay Qrs.50/100 to your teacher ?? U will defintely get their blessings & help.

So, I prefer pay something..to them..! Being a business man u will not loose anything..!!

OR u go ..Karwa Dr. School.