Organization varied considerably in the programs sampled in the facet of class size. This facet has a clear potential impact on the rate of gain in language development, since the amount and focus of input and feedback provided to individuals can be expected to vary with different teacher to student ratios. In order to assess the impact of class size on language gain on TOEIC, the following codes were used: Classes larger than 20 students were labeled "Large"; Those with more than ten, but less than 20 were called "Mid"; classes with fewer than 10 students were considered "Small" classes in the meta-analysis. Class sizes corresponded to program types. College programs typically have very large classes (35 students per class). Company and language school programs are usually in the middle to small class range depending on the program objectives. Extensive courses, in which instruction given over several months, are usually middle-sized. Intensive courses
tend to have a small teacher to student ratio