Teacher Discussion Forums

I am teaching conversational english to classes of 37 junior high (7th-8th) graders at a school in China. The students are taught GUM (Grammer Usage and Mechanics) and vocabulary in seperate classes, and my classes are supposed to facilitate english discussion. The students are at a fairly low level...

I noticed that it is possible to obtain certification for TOEFL and TEFL onine. Whats the deal with this? Do employers look differently at online cerification vs.classroom certification?...or does it not matter at all?