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Estimated Course Completion Times

The most common question we get from prospective students is some variant of:

  • Can I finish Calculus I in 5 weeks?
  • Can I finish Calculus II over Winter Break?
  • Can I finish Differential Equations over the summer?

The honest answer is: it depends - on how many hours per week you can give the course, on your math background, and on how well your work holds up to mastery-level review. There is no single number that works for every student. What we can give you is a clear framework for estimating where you sit on the spectrum.

The Carnegie-Unit Baseline

The standard Carnegie unit assumes 3 hours of student engagement per credit hour per week (roughly: 1 hour of lecture and 2 hours of homework) over a 14-week semester. That gives the following total engagement-hour budget per course:

Course Credit Hours Carnegie Computation Total Engagement Hours Reasonable Range
3 Credits 3 × (1 + 2) × 14 126 hours 3-5 Weeks (full-throttle) up to 1 year
4 Credits 4 × (1 + 2) × 14 168 hours 5-8 Weeks (full-throttle) up to 1 year
5 Credits (Honors) 5 × (1 + 2) × 14 210 hours 8-12 Weeks (full-throttle) up to 1 year

Quick Reference by Course

If you are looking for an easier Calculus course - perhaps a multiple-choice format - this is not the program for you. Distance Calculus is mastery-based, and the timelines below assume genuine mastery-level submissions.

Detailed Per-Course Timelines

The tables below are calibrated by hours-per-week dedication, math-skill profile (or grade in the prerequisite course), and whether the timeline is reasonable, stretched, or a record-pace exception. Stretched means it can be done but only with sustained discipline; World's Record means it has been done by a few exceptional students - do not plan around it.


Example Timelines for Our Core Courses

Common Completion Timelines for DMAT 253 - Calculus I - 4 credits
Hours DedicatedMath SkillsDedicationCompletion TimeAdvisory
5-10 hours/weekWeaker1-2 hours/day16 weeksReasonable
7-12 hours/weekModest2-3 hours/day12 weeksReasonable
10-15 hours/weekStronger3-4 hours/day8 weeksReasonable
15-20 hours/weekStrong5-6 hours/day6 weeksStretched
20-25 hours/weekStrong5-7 hours/day4 weeksStretched
25-35 hours/weekStrong6-8 hours/day3 weeksWorld's Record


How Time Commitment Translates to Success

Distance Calculus has no fixed weekly due dates. That puts the burden on the student to deliberately reserve a steady block of hours each week for coursework. Without that reservation, weeks slip away and progress stalls.

Going faster through a course is directly tied to two things: your math skill level and the quality of your submitted work. Distance Calculus is mastery-based - if your work quality slips because you're trying to push too fast, the instructional team will slow you down regardless of any external deadline you've set for yourself. Quality of understanding is non-negotiable.


Typical Completion Timelines for DMAT 263 - Calculus II - 4 credits
Hours DedicatedCalculus I GradeDedicationCompletion TimeAdvisory
5-10 hours/weekC,D1-2 hours/day16 weeksReasonable
7-12 hours/weekC,D2-3 hours/day14 weeksReasonable
10-15 hours/weekC+,B,B+3-4 hours/day10 weeksReasonable
15-20 hours/weekB5-6 hours/day8 weeksStretched
20-25 hours/weekA5-7 hours/day6 weeksStretched
25-35 hours/weekA+6-8 hours/day4 weeksWorld's Record


Common Completion Timelines for DMAT 201 - Applied Calculus - 3 credits
Hours Per Week DedicatedMath SkillsDedicationCompletion TimeAdvisory
5-10 hours/weekWeaker1-2 hours/day16 weeksReasonable
7-12 hours/weekModest2-3 hours/day12 weeksReasonable
10-15 hours/weekStronger3-4 hours/day8 weeksReasonable
15-20 hours/weekStrong5-6 hours/day6 weeksStretched
20-25 hours/weekStrong5-7 hours/day4 weeksStretched
20-25 hours/weekStrong6-8 hours/day3 weeksUnreasonable, But Has Been Done
30-40 hours/weekVery Strong8-10 hours/day2 weeksUnreasonable, But Has Been Done
40-50 hours/weekVery Strong10-12 hours/day9 daysWorld's Record


Typical Completion Timelines for DMAT 355 - Multivariable Calculus - 4 credits
Hours DedicatedCalculus II GradeDedicationCompletion TimeAdvisory
5-10 hours/weekC,D1-2 hours/day16 weeksReasonable
7-12 hours/weekC,D2-3 hours/day14 weeksReasonable
10-15 hours/weekC+,B,B+3-4 hours/day10 weeksReasonable
15-20 hours/weekB5-6 hours/day8 weeksStretched
20-25 hours/weekA5-7 hours/day6 weeksStretched
25-35 hours/weekA+6-8 hours/day4 weeksWorld's Record


Common Completion Timelines for DMAT 321 - Differential Equations - 3 credits
Hours DedicatedMath SkillsDedicationCompletion TimeAdvisory
5-10 hours/weekWeaker1-2 hours/day14 weeksReasonable
7-12 hours/weekModest2-3 hours/day10 weeksReasonable
10-15 hours/weekStronger3-4 hours/day7 weeksReasonable
15-20 hours/weekStrong5-6 hours/day5 weeksStretched
20-25 hours/weekStrong5-7 hours/day4 weeksStretched
25-35 hours/weekStrong6-8 hours/day3 weeksWorld's Record


Common Completion Timelines for DMAT 335 - Linear Algebra - 4 credits
Hours DedicatedMath SkillsDedicationCompletion TimeAdvisory
5-10 hours/weekWeaker1-2 hours/day16 weeksReasonable
7-12 hours/weekModest2-3 hours/day12 weeksReasonable
10-15 hours/weekStronger3-4 hours/day8 weeksReasonable
15-20 hours/weekStrong5-6 hours/day6 weeksStretched
20-25 hours/weekStrong5-7 hours/day4 weeksStretched
25-35 hours/weekStrong6-8 hours/day3 weeksWorld's Record


Common Completion Timelines for DMAT 311 - Probability Theory - 3 credits
Hours DedicatedMath SkillsDedicationCompletion TimeAdvisory
5-10 hours/weekWeaker1-2 hours/day12 weeksReasonable
7-12 hours/weekModest2-3 hours/day9 weeksReasonable
10-15 hours/weekStronger3-4 hours/day7 weeksReasonable
15-20 hours/weekStrong5-6 hours/day5 weeksStretched
20-25 hours/weekStrong5-7 hours/day3 weeksStretched
25-35 hours/weekStrong6-8 hours/day12 DaysWorld's Record

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Distance Calculus - Student Reviews

Ian M.★★★★★
Posted: May 18, 2025
Courses Completed: Multivariable Calculus
Distance Calculus was a life saver! I needed an accredited program to complete multi-variable calculus for grad school and at the time was an American living in England. Being able to take the course on my own timeline, from my own home, was amazing! The content was thorough and the visualization exercises were very helpful for comprehension and understanding. This was an exceptionally, affordable, thorough, and convenient course that I found a lot of value in and I’m thankful it was available to me!
Transferred Credits To: Air Force Institute of Technology
Benjamin T.★★★★★
Posted: Apr 10, 2020
Courses Completed: Calculus I
This course provided an excellent chance to learn about Calculus...again. I took calculus in high school, but I learned so much more with this course!
It does take a good amount of time to do all the lessons, so definitely keep on top of them, but all the exercises helped me to really understand the material. And the nice thing is you can do it on your own time at home.
Transferred Credits To: Western University of Health Sciences: College of Optometry
Jenny Zuercher★★★★
Posted: May 18, 2025
Courses Completed: Precalculus, Calculus II
Dr. Curtis's courses are very difficult, but they are definitely worth it! I took Calculus 2 from Dr. Curtis in my senior year of high school and went into a combined Calculus 2 and Calculus 3 course my first year of college. This course prepared me, and I found that I already knew much of the Calculus 3 coursework. The most difficult part of these courses, in my opinion, is pacing yourself. If you can keep yourself on track, then you are all good to go!
Email: jenz2.home@icloud.com
Transferred Credits To: University of Iowa
Aiden B.★★★★★
Posted: Jul 29, 2026
Courses Completed: Calculus II, Multivariable Calculus, Differential Equations, Linear Algebra
After completing all the math offered by my highschool, I switched over to Roger Williams for Calculus II and onward. Overall, it has been a pretty great way to understand the topics online, with transferrable college credits. The exams are not terrible, and the courses cover the vast majority (if not all) of topics covered by traditional courses, with some unique ones added to. So far, I have taken four courses, with another one or two before I graduate.

The only problem with the course is the lack of pen and paper work. This shouldn't come as a crazy surprise with an online course, but there is not much emphasis on symbolic computation. Mathematica or other software does most of the heavy computation for you. The lectures usually show how to solve the problems through paper, but those skills are rarely put into practice. Literacy Sheets act as a way to do some of that (especially with the Calculus II & III course).

All in all, this isn't a huge issue. I just memorize and practice things like double integration, Laplace, ODE solving, matrix diagonalized form, row operations, etc. With a little outside work, this resolves itself. Without Roger WIlliams, I probably would not have been able to take any of these math courses in highschool.

So overall, a great choice for highschool advanced math, especially with transferrable credits.
Email: abarger@protonmail.com
Lucas L.★★★★★
Posted: Jun 25, 2026
Courses Completed: Multivariable Calculus
The professor as well as the TAs give great feedback when you need help with problems and the videos are great at explaining concepts. Return time on work is good and the work is not too much to handle.
Transferred Credits To: University of Wisconsin
Hari K.★★★★
Posted: Jun 24, 2026
Courses Completed: Linear Algebra
This course gives a perspective on Linear algebra that no traditional course does. I’d say i gained much more intuition for this subject from the DC course than my friends who took traditional courses elsewhere. As a cs major, this version of learning with visualization has helped me a lot in understand ML models. However the course doesn’t have videos for the last 2 chapers so i had to self learn with the mathematica notebooks. Response times are a little slow but since it’s a remote class, i guess it’s justified. Overall amazing course and definitely take this over traditional lin alg classes.
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