I went through the ATP Career Program. PPL to CFII ME and SE in 93 days. The CFI program is a punch in the gut but they give you the tools to pass. I passed all 8 checkrides first time. Some people make the odd mistake and have a slip-up, no biggie. The only people that have a problem in the program are people that think they walk by or go to the bar with the book and learn everything they need to know. My CFI initial was with the FSDO not a DPE and went from 0600to 1600hrs. I passed, and so did the other 4 people that took FSDO checkrides that day. Anecdotal evidence, but evidence, nevertheless.