Credits for RSL study RSL generally includes at least 20 academic (contact) hours of group language study per week. In a few schools it might be more. An academic hour is 40 minutes. This equates to roughly 14-16 credits per semester (of at least 15 weeks). If you are studying for a custom period, then you can use the rough equation of approximately 20 academic hours per credit. Curriculum For all levels, the following flexible allocation of time is generally used.*  Conversational speech, 35% Russian grammar, 30% Phonetics, 15% Vocabulary building-20% For each level, a suggested curriculum is used:* Beginning level Intermediate level Advanced level *These can be changed based on the needs of an individual group.