2 for 1 represents 2 academic hours (100 minutes) of study for each 1 academic hour (50 minutes) of lecture (contact) at the college level.
What does 1 for 2 represents?
1 for 2 represents 1 academic hour (50 minutes) of study for 2 academic hours (100 minutes) of lecture (contact) at the high school level so that 1 year at high school level equals 1 year at college level.
Since there are 50 minutes (average) of contact per day for 180 days in high school, add to 25 minutes (average) of study per those 180 days means 75 minutes times 180 days for 13,500 minutes equaling 6 semester units.
Note that 180 days by 50 minutes of contact is equal to 4 semester units not counting homework and self study.
Too much homework?
The recommendation for 10 minutes of homework per grade level means 90 minutes to 120 minutes of homework per day, but to equalize with college level for Advanced Placement classes, 150 minutes of homework per day is necessary.
For an Advanced Placement to be 8 units (