U.S. Department of Education, Institute of Education Sciences · reviewed 2026-10-26
What this source supports: Distributed practice sessions with breaks outperform cramming for long-term retention.
Source limit: Optimal session length varies by individual and material. Use this as a starting point.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
Limits
This guide multiplies the numbers you enter. It does not predict a score or promise a tutor will deliver one.
Optimal session length varies by individual and material. Use this as a starting point.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Common questions
What does the App compute?
Turn a score gap, points an hour, hourly cost, and weeks into tutoring hours and cost.
What does the App not do?
This App multiplies the numbers you enter. It does not predict a score or promise a result from tutoring.
Where do the numbers come from?
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
Before you start
Open the linked source page and keep it beside you.
Gather the values the App asks for:
Points gained an hour.
Current practice score.
Target score.
Tutor cost an hour.
Weeks available.
Set aside ten quiet minutes; rushed numbers are the main error this guide prevents.
Free Companion App
The App computes the worked example with your own numbers, in your browser.
APP 1
Tutor Hours to Target Score
Turn a score gap, points an hour, hourly cost, and weeks into tutoring hours and cost.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.