Super pleased with BTES! Incredibly grueling studying for several days in a row from 8-5 but if you want to take your career to the next level, YOU NEED to get serious and take on BTES. I have been studying for this license for nearly a year and 4 of those months were without BTES. I had to take the exam twice even with all of the studying I have done. If it weren’t for BTES, I would still be at square 1. I still need to take the business test but I can happily say the grueling 9 hour plumbing exam is finally behind me thanks to BTES!