If you sign up for eLearning you can complete dive theory portions of PADI courses in your own time - you can access eLearning from any c -LSB-...] (sunrise-divers.com)
Complete the classroom / theory portion of the PADI Open Water Diver course at your own pace, anytime, anywhere with PADI eLearning. (oahuscubadiving.com)
** Candidates who are unable to pass the Theory portion in three successive attempts will be required to take a one year hiatus from sitting the examination. (mastersommeliers.org)