Study Group Scheduler Calculator

The calculator applies an effectiveness multiplier to your raw total study hours: groups of 5 or fewer keep 100% effectiveness, groups of 6-8 lose 5% per person above 5, and groups larger than 8 lose an additional 3% per person past that on top of the 15% already lost getting to 8. So a group of 10 runs at roughly 79% effectiveness (1.0 minus 0.15 minus 2 times 0.03), meaning its effective study hours are noticeably lower than the raw total study hours the group actually schedules.

It's simply each session's total length in minutes divided evenly by the number of people in the group — a 2-hour session with 4 people gives 30 active minutes per person. It's an equal-division assumption only: it doesn't distinguish a facilitator or the most vocal member from someone who stays quiet, so real per-person participation time will vary from this figure in practice.

It takes 80% of your total available sessions (reserving the remaining 20% as a review buffer) and rounds down, then checks whether that number is greater than or equal to the topics you entered. If you have 30 total sessions, 80% gives 24 usable sessions for new material — if you listed 20 topics or fewer you're flagged on track, but 25 or more topics would flag you as not on track, meaning you'd need more sessions, more weeks, or fewer topics.

Every session's total minutes get divided into four fixed proportions regardless of group size or topic count: 15% for reviewing previous material, 40% for new material, 30% for practice or problems, and 15% for wrap-up and questions. For a 2-hour (120-minute) session, that works out to 18 minutes of review, 48 minutes of new material, 36 minutes of practice, and 18 minutes of wrap-up.