LCL students must earn 52 credits for a diploma, with credits allocated as follows:
Credits come from semester-long (1 credit) or year-long (2 credits) courses. Students generally take seven classes per semester with one study period, though taking eight classes is common, especially for high-ability or musically involved students. During the first two years, due to core curriculum requirements, students take one or two electives, with more electives available in the upper grade levels.