Dear Mughal,
Dont worry about extention.I am 100% sure that this will be no problem for you.They just need economically active.Three pay slips are enough.
Nizamm,
Dont try for another review.Please go for paid appeal(Fresh Case).Many cases were approved on 2nd application.Also note that on second application,the case worker is always different.
Rex,
As M wazir says,try to found a new job but dont worry about the extention,in my own thinking this will be not problem for you.Many people got three years extention with so less salary.
What do you mean by graduate level job in school?either just B.Ed or highly qualified like M.A , M.Ed?Pakistan B.Ed is not equal to British B.A.If he is working with M.A or M.Ed,he can apply with Govt job as main job and private college job as part time(because of just 4-5 hours duty timings)